Final Histopathology Report Research Articles

143 An audit of indications, complication and justification of hysterectomies at prince charles hospital, merthyr tydfil

Objective-Aim: of this audit was to analyse indications, complications, correlation of preoperative diagnosis with final histopathology report and justification of all hysterectomies at Prince Charles hospital. Method: It is a retrospective study of 57 cases who had hysterectomies in 2019. The data regarding patients age, indication for hysterectomy, type of hysterectomy, complications during and after surgery and final histopathological diagnosis were collected from the patient case records. Results: A total of 57 cases of hysterectomies were included in the study.

Gaining prowess in the art of hysterectomy, reflections and complications; a teaching hospital experience

Objective: The purpose of this audit is to analyze the indications, complications, and the final histopathology reports of all hysterectomies done under our care during the study period at Jordan University Hospital. The ultimate goal of the study is to clarify the importance of acquiring brain surgical skills during practice and follow-up. It should be a target present in teaching hospitals that adopt educational residency programs. Methods: This is a retrospective study involving all patients who underwent hysterectomy from January 2017 till January 2020. Results: a total of 245 patients underwent hysterectomy (regardless of the type) during the study period. The most common indication was abnormal vaginal bleeding followed by malignancy. The most common intraoperative complication was bladder injury followed by bleeding. The most common postoperative complication was wound infection followed by hematoma. The most common histopathology was benignly followed by malignancy. Conclusion: hysterectomy is a surgical procedure commonly performed to alleviate health welfare; nevertheless, in some situ, actions it is portrayed as a lifesaving procedure. Unsurprisingly, the significance and consequences of related complications mandate for patients planned for the procedure to be appraised thoroughly and adequately before surgery. The aim and art of refining and improving acquired surgical skills and experience portrayed intraoperatively errors a decline in complications rate. Time and practice aid to the ascending linear curve of gained surgical skills, which mirrors a gradual drop in the complications rate.

The Utility of Frozen Sections in the Evaluation of Clear Margins in Oral Squamous Cell Carcinomas: A Cross-Sectional Study From a Tertiary Care Center.

Background and objectiveHead and neck cancers are prevalent in Pakistan. Oral squamous cell carcinomas are primarily treated via surgical removal, and complete surgical resection is the paramount prognostic factor. A resection margin of 5 mm on the final histopathology report has been accepted as adequate in the existing literature. Negative margins on the frozen section do not guarantee adequate disease-free resections on the final histopathology report. In this study, we aimed to ascertain how accurately tumor-free margins can be detected on frozen sections, which are reported intraoperatively compared to permanent sections of the same tissues reported after proper staining in oral squamous cell carcinoma patients.MethodsA cross-sectional study was conducted at a tertiary care hospital in Karachi, Pakistan; 94 patients presenting between January and October 2016 were included in this study and a total of 432 tumor margins were assessed.ResultsAmong the total 94 patients included in the study, 79% were male and 21% were female. Buccal mucosa was the most commonly involved subsite (57%), followed by the tongue (25%). The most common T stage was T4 (33%), followed by T2 and T3 at 28% and 21% respectively, while the most common N stage was N0 (55%) followed by N1 at 16% and N2 at 22%. The sensitivity of the frozen section in comparison to the permanent section was found to be 50%, while specificity was calculated to be 99.8%. The positive predictive value was 75% and the negative predictive value was 99.3%.ConclusionThe frozen section is a highly useful tool for the evaluation of tumor margins. However, while it has high diagnostic accuracy rates, it can produce altered results and therefore requires high clinical correlation.

Diagnostic Dilemma During Laparoscopic Cystectomy of Twisted Serous Cystadenofibroma of Ovary in Adolescent Girl – A Case Report with Literature Review

The most ovarian tumor arises from the surface epithelium and the serous tumor is the most common histological variant. Serous cystadenofibroma is a rare variant of serous tumor that comprises both epithelial and fibrous stromal components. They are benign in nature but may often be misinterpreted as malignant nature due to their solid cystic nature with papillary projections. We herein report a case of twisted right ovarian cyst in 17 years unmarried girl that was clinically and radiologically benign and hence managed laparoscopically. Intraoperatively cyst ruptured that released clear serous fluid. During cystectomy, multiple small to large size (maximum 2x2 cm) papillary projections were noted within the uninoculated cyst without any other solid components. With the possibility of a borderline tumor, the patient party was counseled and opted for cystectomy with the possible need for a second surgery. The final histopathology report was benign serous cystadenofibroma.

Abstract P3-02-03: Quantitative molecular breast imaging for early prediction of neoadjuvant systemic therapy response in locally advanced breast cancer patients

Abstract BACKGROUND: Increasing use of neoadjuvant systemic therapy (NAT) for early and locally advanced breast cancer led to critical need for development of tools capable of early treatment response assessment after NAT. Tc-99m sestamibi Molecular breast Imaging (MBI) as a functional imaging modality has a promise to detect changes in the tumor prior to anatomical changes detected by mammogram or ultrasound. PURPOSE: To evaluate the ability of quantitative MBI parameters to predict pathologic complete response (pCR) after completion of NAT in breast cancer patients. MATERIALS AND METHODS: Patients with invasive breast cancer (T1-T4, N0-N3, M0) planned for NAT followed by surgery were enrolled in a prospective IRB approved trial. MBI was performed at baseline and after two cycles of NAT. Patient demographic and tumor biology information (Ki-67, HER2, ER/PR) was collected. MBI images were quantified using a novel approach with corrections for scatter and attenuation and regions of interest (ROI) were drawn over tumors to compute three quantitative MBI uptake metrics for correlation with pathologic response: MBI-specific standardized uptake value (SUV), tumor to background ratio (TBR), and tumor volume. Pathologic complete response was determined based on final histopathology report at the time of surgery as absence of the invasive disease in the breast and axillary lymph nodes. MBI metrics at baseline, after 2 cycles of NAT and interval change were correlated with pCR and tumor biology using the Wilcoxon Rank Sum test, Kruskal-Wallis test or Fisher’s exact test. Statistical analysis was carried out using R (version 3.6.3, R Development Core Team). RESULTS: A total of 70 patients with median age 47.5 years (range 30-77) were included in the analysis. Breast cancer subtypes were: HER2 negative (ER/PR+) 35.7% (25/70), HER2 positive (ER/PR +/-) 35.7% (25/70), and triple negative (HER2-, ER/PR-) 28.6% (20/70). Change in SUV after 2 cycles of NAT was higher in patients with pCR compared to those who did not achieve pCR (mean decrease in SUV of 15.57 and 4.83 respectively, p<0.001). Additionally, change in TBR in patients with pCR was also higher compared to patients who did not achieve pCR (mean decreases of 1.14 and 0.56, respectively, p<0.001). No correlation was found between baseline SUV, baseline TBR, change in volume, and pCR. CONCLUSION: MBI-specific SUV and TBR changes after two cycles of NAT correlate and may predict pCR in patients with locally advanced breast cancer. Quantitative MBI parameters are novel promising imaging tools that may help to detect early clinical benefit and optimize management in patients receiving NAT. Citation Format: Miral M Patel, Beatriz E Adrada, Benjamin Lopez, Rosalind P Candelaria, Jia Sun, Medine Boge, Rania M Mohamed, Nabil Elshafeey, Gary Whitman, MD, Huong T Le-Petross, Lumarie Santiago, Marion E Scoggins, Deanna Lane, Tanya Moseley, Galit Zylberman, Jerica Saddler, Jessica WT Leung, Wei T Yang, Vincente Valero, S Cheenu Kappadath, Gaiane M Rauch. Quantitative molecular breast imaging for early prediction of neoadjuvant systemic therapy response in locally advanced breast cancer patients [abstract]. In: Proceedings of the 2021 San Antonio Breast Cancer Symposium; 2021 Dec 7-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2022;82(4 Suppl):Abstract nr P3-02-03.

Clinicodemographic and Computed Tomography Scan Findings Associated with Thyroid Gland Invasion among Patients with Laryngeal Squamous Cell Carcinoma.

We aim to determine the association between preoperative CT scan findings of thyroid cartilage invasion, cricoid cartilage invasion, and paraglottic space involvement with tumor extension to the thyroid gland on final histopathology among patients with laryngeal squamous cell carcinoma (SCC) in a tertiary hospital in the Philippines. Patients with histopathologically-confirmed laryngeal SCC who underwent total laryngectomy with thyroidectomy while admitted at the public ward of the Department of Otorhinolaryngology, Philippine General Hospital, from January 2013 to December 2019 were included. CT scans were reviewed by 2 blinded independent radiologists. CT scan data including subsite/s involved, thyroid cartilage/cricoid cartilage erosion, paraglottic space involvement, thyroid gland involvement, and thyroid gland involvement on final histopathology were gathered. Clinicopathologic data such as age, T Stage, early tracheostomy, and time between CT scan and surgery were also collected and analyzed. Fisher's exact test was computed for both clinicopathologic and CT scan data with a significant value having p<0.05. Cramer's V and phi coefficient were computed for nondichotomous and dichotomous variables, respectively. Odds ratio was also computed for dichotomous variables with p<0.05 on Fisher's exact test. Fifty-nine (59) men and 4 women were included, aged 43 to 81 years old. Most patients were classified as T3 (n=18) and T4 (n=41) (total=93.7%), with most having transglottic primary tumors (n=29, 46%), and only 8 (12.7%) patients having subglottic tumor involvement on final histopathology. Thyroid cartilage erosion or invasion were noted in 63.4% (n=40) of patients' CT scans and 58.7% (n=37) of patients' final histopathology reports. Cricoid cartilage and paraglottic space involvement were often not reported on final histopathology results. Thyroid gland involvement was only noted in the final histopathology reports of 5 patients (7.9%). Significant association between cricoid cartilage findings (p=0.032, Cramer's V=0.318) or thyroid gland involvement on CT scan (p=0.018, Phi=0.384; OR 13 95% CI 1.797, 94.035) with thyroid gland involvement on final histopathology was noted. The rest of the variables had no significant association with thyroid gland involvement on final histopathology. Cricoid cartilage involvement (erosion or invasion) and thyroid gland involvement on CT scan are associated with thyroid gland involvement on final histopathology in patients with laryngeal SCC. Patients with these CT scan findings may stand to benefit more from thyroidectomy to ensure good margins of resection.

Node Positivity in T1b Gallbladder Cancer: A High Volume Centre Experience

Introduction: Identification of early stage gallbladder cancer is difficult which is why about half of the patients are diagnosed post simple cholecystectomy . Simple cholecystectomy is considered adequate for T1a gall bladder cancer, however T1b requires radical cholecystectomy due to chances of lymph node metastasis. Methods: A retrospective review of a prospectively maintained database of gall bladder cancer patients operated at our institute from March 2010 to March 2021 was conducted. Only patients with proven gallbladder adenocarcinoma on final histopathology report were included. Results: There were a total of 1,245 patients of upfront and revision surgery for gall bladder cancer in this period. There were 76 patients of T1b stage of which 11 patients underwent upfront surgery and 65 patients were diagnosed as incidental gall bladder carcinoma. Neoadjuvant treatment was given to 9 patients due to uptake in periportal nodes and they were excluded from final analysis. The median age was 50 years (28-72 years). The median nodal harvest was 8 nodes (2-24 nodes). Positive nodes were found in 7 (10.44%) out of 67 patients with pT1b in final histopathology report. After a median follow up of 47.5 months (range 2-120 months), 7 (10.4%) patients had succumbed due to disease, 2 were alive with disease and 3 were lost to follow up with an OS of 89% and DFS of 86%. Conclusion: Nodal positivity for T1b gall bladder cancer ranges around 10% and radical surgery with complete peri –portal lymphadenectomy should be considered as standard of care.

Utility of Intraoperative Imprint Cytology in Diagnosis and Grading of Glioma: A Cross-sectional Study

Introduction: Gliomas are most common primary Central Nervous System (CNS) neoplasm in adult population. Gliomas predominantly arise from brain parenchyma. Invasion of adjacent normal parenchyma is a prominent feature. Aim: To study the epidemiological incidence of glial tumours and the viability and accuracy of intraoperative cytology in diagnosis and grading glial tumours. Materials and Methods: A cross-sectional study was done on 30 patients who underwent excision surgery at Department of Neurosurgery at Institute of Postgraduate Medical Education and Research IPGMER and SSKM, Kolkata, West Bengal, India. Clinically, radiologically confirmed cases of Space Occupying Lesion (SOL) of brain with a history of neurosurgical intervention were included. Patients medically unfit for surgery or without radiological evidence of SOL in the brain were excluded from the study. Intraoperative imprint touch cytology of the specimens was done. Part of the tissue was kept for Formalin Fixation and Paraffin Embedding (FFPE) and subsequent histopathological examination were done. Results of intraoperative imprint cytology were compared with final histopathology report and grading. Matthews correlation coefficient t-test, Kohen's Kappa (κ), Chi square test (χ2 ) were used for the statistical analysis. A p-value of p&lt;0.5 was considered statistically significant. Results: About 10 (33.3%) of the patients presented with frontal lobe lesion. Out of 30 cases 29 (96.6%) were histologically confirmed to be of glial origin, 1 (3.3%) was metastasis from other tumour. These 29 cases were diagnosed as different glial neoplasm on intraoperative imprint cytology and were confirmed by histology. According to histological subtype 12 (41.37%) were glioblastoma, 10 (34.48%) were diffuse astrocytoma, 3 (10.34%) were pilocytic astrocytoma, 3 (10.34%) was ependymoma. Intraoperative impression cytology diagnosis was compared with confirmatory histological diagnosis. Sensitivity and specificity was found to be 93% and 50%, respectively, Positive Predictive Values (PPV) 96%, Negative Predictive Values (NPV) 33%, diagnostic accuracy 89.65% and p&lt;0.5 was statistically significant. Conclusion: In the present study, confirmatory histopathology report showed a significant association with imprint cytology report. Hence, it can be concluded that intraoperative imprint cytology is a fairly accurate, rapid and inexpensive method of diagnosis and grading of gliomas.

The validity and clinical utility of axillary ultrasonography-guided fine needle aspiration biopsy in detection of nodal metastasis in early-stage breast cancer patients: a retrospective single-center experience.

Assessing the validity and clinical utility of axillary ultrasonography (AUS)-guided fine needle aspiration biopsy (FNAB) in detection of nodal metastasis during preoperative axillary investigation in comparison to the histopathologic diagnosis in early-stage breast cancer. A total of 279 operated primary breast cancer patients (age: 55.3 ± 12.8, ranged 17-90 years) were included. Data on AUS findings at the time of initial diagnosis (first look AUS), second-look AUS findings performed by the breast radiologist during breast biopsy procedure and the AUS-guided FNAB findings were evaluated with respect to the final histopathology report obtained through axillary surgery via sentinel lymph node biopsy (SLNB) and/or axillary lymph node dissection (ALND). The diagnostic performance of each method in detecting metastatic ALNs were compared in terms of sensitivity, specificity, accuracy, positive predictive value (PPV), and negative predictive value (NPV). The sensitivity, specificity, and accuracy of the first look AUS in detecting nodal metastasis were 64.56%, 86.78%, and 74.19% while the PPV and NPV were 86.44% and 65.22%, respectively. The sensitivity, specificity, and accuracy of the second-look AUS were 70.25%, 87.60%, and 77.78%, while PPV and NPV were 88.10% and 69.28%, respectively. The sensitivity, specificity, and accuracy of the second-look AUS guided FNAB were 89.19%, 73.33%, and 87.30%, while the PPV and NPV were 96.12% and 47.83%, respectively. The consideration of second-look AUS and finding of nodal metastasis in FNAB was associated with significantly higher likelihood of ALND (55.4% vs. 44.6%, p < 0.001) and lower likelihood of SLNB (34.7% vs. 65.3%, p < 0.001) compared to consideration of nonmetastatic ALN status. In 23 (22.3%) patients with positive findings on AUS-guided FNAB, SLNB was applied; 21 had positive results after surgical dissection, indicating that nearly 20% of patients had unnecessary SLNB. US-guided FNAB of suspicious ALNs is a simple, minimally invasive, and highly effective method for preoperative axillary staging in patients with invasive breast cancer avoiding the more invasive method SLNB and it enables the surgeon to proceed directly to ALND in positive cases.

A Rare Tumor in a Rare Location: Ganglioneuroma

Ganglioneuroma is a rare benign tumor Neuronagliomas of the adrenal gland are a rare pathology. Therefore, this case will be of interest to urologists, surgeons, oncologists, and pathologists. Located in the adrenal gland (20%), along the sympathetic chain, and particularly in the posterior mediastinum (40%) and the retroperitoneum (30%). Ganglioneuroma poses a positive diagnostic and therapeutic problem. We report the case of a patient aged 48 admitted for pain in the right hypochondrium. He had no significant past medical or surgical history. On a physical examination, there were no noticeable findings except for mild tenderness and a mass on palpation. He underwent abdominal CT, which showed a relatively homogenous right adrenal tumor measuring. Endocrine work-up including urine catecholamine and cortisol levels was normal. Due to the tumor size and with consideration of the differential diagnosis of a malignant lesion, we elected to operate on the patient. Right adrenalectomy was performed, with no related complications. The final histopathologic report revealed adrenal ganglioneuroma. Although benign, the ganglioneuroma can present malignant aspects, in particular, CT scans and biological that can mislead the clinician, so histology remains the examination of choice for making the diagnosis.

Ovarian granulosa cell tumor – case report and literature review

Gigantic (&gt;10 cm) ovarian cysts are a rare finding in gynecology. In literature, there are only a few cases of giant ovarian cysts reported, mainly in older patients. Granulosa cell tumor (GCT) of the ovary is frequently a hormonally active, stromal cell neoplasm with the ability to produce sex steroids, such as estrogens. We report the case of a 61-year-old postmenopausal woman with a giant left ovarian cyst measuring 39 x 28 cm. The excision of the giant left ovarian cyst was performed, with intraoperative histologic examination; the result was granulosa cell tumor. We continued the surgery with a total abdominal hysterectomy and bilateral salpingo-oophorectomy and complete staging. On the final histopathological report the result was granulosa cell tumor of the ovary. The management of these high-risk ovarian tumors should have a strict follow up in order to avoid complications.

Performance and survival outcomes of defect-driven versus specimen-driven method of frozen section intraoperative margin assessment in oral cancers

Margin status is one of the most important prognostic factors in oral cancers. Intraoperative frozen section (FS) can be performed to ensure a margin-negative resection, however the method of FS assessment is debatable. The aim of this study was to compare the defect-driven (DDA) versus specimen-driven (SDA) approach for intraoperative assessment of tumour margins in oral cancer resections and their impact on loco-regional recurrence and survival. The primary study endpoint was margin status determined from the final histopathological examination report. Secondary endpoints were disease recurrence and survival. This retrospective cohort study compared the two methods of FS in terms of their performance and survival outcomes. All oral squamous cell carcinoma patients who underwent surgery as the primary treatment from January 2018 to February 2019 were included. The involved margin rate was slightly lower with SDA than DDA (7.5% vs 11.8%), however the difference was not statistically significant. The recurrence rate was higher with DDA (19/51, 37.2%) than SDA (14/53, 26.4%), although this was not statistically significant. Local recurrence-free survival (DDA 62% vs SDA 75%; P = 0.653) and overall survival (DDA 76% vs SDA 78%; P = 0.300) at 18 months of follow-up were comparable. There was no significant difference in sensitivity or specificity of intraoperative FS for margin assessment between SDA and DDA. The type of intraoperative FS technique used did not affect loco-regional recurrence or overall survival.

Prospective Phase II Open-Label Randomized Controlled Trial to Compare Mandibular Preservation in Upfront Surgery With Neoadjuvant Chemotherapy Followed by Surgery in Operable Oral Cavity Cancer

The objective of this study was to explore the potential role and safety of neoadjuvant chemotherapy (NACT) in tumor shrinkage and resultant mandibular preservation in oral cancers compared with conventional surgical treatment. This study was a single-center, randomized, phase II trial of treatment-naive histologically confirmed squamous cell carcinoma of the oral cavity with cT2-T4 and N0/N+, M0 (American Joint Committee on Cancer, seventh edition) stage, necessitating resection of the mandible for paramandibular disease in the absence of clinicoradiologic evidence of bone erosion. The patients were randomly assigned (1:1) to either upfront surgery (segmental resection) followed by adjuvant treatment (standard arm [SA]) or two cycles of NACT (docetaxel, cisplatin, and fluorouracil) at 3-week intervals (intervention arm [IA]), followed by surgery dictated by postchemotherapy disease extent. All patients in the IA received adjuvant chemoradiotherapy, and patients in the SA were treated as per final histopathology report. The primary end point was mandible preservation rate. The secondary end points were disease-free survival and treatment-related toxicity. Sixty-eight patients were enrolled over 3 years and randomly assigned to either SA (34 patients) or IA (34 patients). The median follow-up was 3.6 years (interquartile range, 0.95-7.05 years). Mandibular preservation was achieved in 16 of 34 patients (47% [95% CI, 31.49 to 63.24]) in the IA. The disease-free survival (P = .715, hazard ratio 0.911 [95% CI, 0.516 to 1.607]) and overall survival (P = .747, hazard ratio 0.899 [95% CI, 0.510 to 1.587]) were similar in both the arms. Complications were similar in both arms, but chemotherapy-induced toxicity was observed in the majority of patients (grade III: 14, 41.2%; grade IV: 11, 32.4%) in the IA. NACT plays a potential role in mandibular preservation in oral cancers with acceptable toxicities and no compromise in survival. However, this needs to be validated in a larger phase III randomized trial.

Mucinous Adenocarcinoma Arising from Chronic Perianal Fistula - A Case report

Mucinous adenocarcinoma arising from chronic perianal fistula in ano is a rare entity [1]. It is often mismanaged as benign disease due to its presentation. At present no guidelines have been established concerning diagnostic and treatment strategies due to the rarity of the tumour [2].A high index of clinical suspicion and biopsy of fistulous tracts and abscesses are key to early diagnosis and prompt treatment. We present a case of a 45 years old gentleman who initially presented with history of chronic perianal fistula for 3 years. Several biopsies from the fistulous tract, perianal skin opening and sigmoidoscopy biopsy were suggestive of benign nature of the disease. In view of high index of clinical suspicion and the nonhealing nature of the fistula tract, he underwent abdominal perineal resection with pediculated gracilis myocutaneous flap. The final histopathology report confirmed perianal mucinous adenocarcinoma.

The Prediction of Malignancy Risk in Thyroid Nodules Classified as Bethesda System Category III (AUS/FLUS) and the Role of Ultrasound Finding for Prediction of Malignancy Risk

ObjectiveTo predict the risk of malignancy in category III of the Bethesda System for Reporting Thyroid Cytopathology "Atypia of Undetermined Significance/Follicular Lesion of Undetermined Significance (AUS/FLUS)" at King Abdulaziz Medical City, Riyadh, Saudi Arabia. It also intends to determine other possible contributing predictors of malignancy in thyroid nodules such as age, sex, and ultrasound (US) findings.MethodThis retrospectively designed study included 187 patients (mean age, 43.9 ± 14.1 years) with thyroid nodules, which were diagnosed as AUS/FLUS and all patients included had total thyroidectomy or lobectomy between January 2013 and December 2018 at King Abdulaziz Medical City in Riyadh, Saudi Arabia. The electronic medical records, US images, and final cytopathology and histopathology reports were reviewed and analyzed.ResultThe overall incidence of AUS/FLUS was (46.5%). Multivariate analysis of US features revealed that malignancy was significantly associated with nodules with irregular margins, microcalcification, multiple numbers (P < 0.001), and hypoechogenicity (P 0.04).ConclusionDespite the high rate of malignancy of nodules AUS/FLUS, it is still consistent with previously reported studies. The highly suspicious ultrasound features (irregular margins, microcalcification, multiple nodules, and hypoechogenicity) could be helpful in the diagnosis of thyroid cancer.

Is it Necessary to Send Clinically Diagnosed Benign Skin and Subcutaneous Lesions Excised Under Local Anesthesia for Routine Histopathological Examination?

BackgroundThe common benign surgical lesions of skin and subcutaneous tissues like lipoma and sebaceous cysts are diagnosed clinically and treated by surgical excision under local anesthesia. The occurrence of malignancy in these lesions is extremely low, and routine histopathological examination (HPE) adds to increased costs and workload on pathologists. This study was undertaken to estimate the clinical concordance and the frequency of malignancy in these lesions.MethodsA total of 1,815 HPE reports of clinically benign skin and subcutaneous lesions excised under local anesthesia from January 2014 to December 2018 were studied.ResultsLipoma (31.3%) and sebaceous cyst (29.9%) were the common clinical diagnosis in our study. The clinical accuracy in the diagnosis of lipoma was 88.6%, and for sebaceous cyst, it was 72.7%. There were six reports of malignancy in our study from the clinically diagnosed benign skin and subcutaneous lesions (0.33%). None of the cases of lipoma and the sebaceous cyst had a malignancy in the final histopathology report. The frequency of malignancy in the rest of the lesions is 0.85% (six out of 699 cases); (p-value: 0.003).DiscussionIn the absence of red flag signs, lesions like lipoma, sebaceous cyst, corn, and callus can be discarded without an HPE. We advocate routine HPE of other solid lesions, cystic lesions with solid areas, and pigmented or ulcerated lesions, as the clinical concordance is low and there is a significant occurrence of malignancy in these lesions.

P–465 Effect of letrozole over Ki–67 expression in breast cancer during controlled ovarian stimulation (COS) for fertility preservation (FP): case report

Abstract Study question Does concomitant letrozole administration during COS alter Ki–67 expression in women undergoing FP procedures before breast cancer surgery? Summary answer Concomitant letrozole administration during COS, even for a short period, can reduce Ki–67 expression in breast cancer. What is known already The biggest concern with COS in breast cancer patients is the increase in serum estradiol levels, caused by the development of multiple follicles simultaneously. This has always been a major hindrance to the use of traditional ovarian stimulation regimens in these patients, due to the large amount of evidence on the pathogenetic role of estrogen in breast cancer propagation. To limit the rise of estradiol during COS, most centers have adopted concomitant letrozole administration. Recently, some studies have reported changes in tumor pathology after letrozole administration, such as a significant fall in Ki–67 expression. Study design, size, duration Case report including 2 patients undergoing COS with concomitant letrozole administration for 12 days before breast cancer surgery. Participants/materials, setting, methods The first patient was a 28-year-old Caucasian woman with a breast biopsy showing an infiltrating ductal carcinoma in the upper external quadrant of the right breast. The second patient was a 33-year-old Caucasian woman with a diagnosis of infiltrating ductal carcinoma of the upper external quadrant of the left breast. Both patients underwent COS with concomitant letrozole administration 5 mg daily for 12 days. Ovarian stimulation was performed using a GnRH-antagonist random-start protocol. Main results and the role of chance In the first patient, Ki–67 expression in the initial biopsy was 55%. After completion of FP procedures, she underwent quadrantectomy with sentinel-lymphnode biopsy. In the final histopathological report Ki–67 expression fell to 25%. In the second patient, the first biopsy showed a Ki–67 expression of 30%, while after mastectomy it fell to 10%. Limitations, reasons for caution Only 2 patients were included in the study. Wider implications of the findings: COS is feasible before breast cancer surgery, as long as an adequate cancer biopsy with immunohistochemical evaluation has been collected. Cytological diagnosis is not enough to start FP procedures. Evaluation of biological parameters after letrozole administration could lead to underestimation of cancer proliferation rate and to inappropriate treatment strategies. Trial registration number NA

A Prospective Observational Study to Determine the Correlation of Clinical, Ultrasonography, and Pathological Examination of Cervical Lymph Nodal Staging in Oral Squamous Cell Carcinoma.

Oral cancer is one of the most common cancers in our population. These cancers are drained by the nodes located in the cervical region which are easily accessible for clinical examination. However, these cervical nodes may also be enlarged due to various other nonmalignant causes. Hence, accuracy of clinical examination and ultrasound screening for cervical lymph nodes is invaluable. The aims of this study are (1) to correlate the clinical, radiological, and pathological results of cervical lymph nodes in patients with oral malignancy and (2) to calculate the accuracy of clinical and radiological methods in detecting malignant cervical lymph nodes. A prospective observational study was undertaken from January 2016 to December 2016 amounting to a total of 76 patients. All patients diagnosed with squamous cell carcinoma of the oral cavity and having a palpable neck node(s), who were planned for surgery were included. Clinical examination, ultrasonographic (USG) screening of the neck, and the final histopathology reports were noted. The sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) for radiological screening by ultrasound were 90.5%, 90.9%, 79.2%, and 96.2%, respectively, and that for clinical examination were 61.9%, 69.1%, 43.3%, and 82.6%, respectively. Area under the curve (AUC) for ultrasound screening was 0.907, and the AUC for clinical examination was 0.655. Ultrasonography is a reliable, cost-effective imaging method in the assessment of malignant cervical nodes in patients with oral cancer, which is to be used along with clinical palpation for improving the accuracy of clinical staging and surgical planning preoperatively.

Myoepithelioma of the Parotid Gland: A Case Report and Literature Review.

Tumors of the salivary glands are rare and have various histo-pathological subtypes. The overall incidence is 2.5-3 per 100,000 patients per year. Myoepithelioma of the parotid gland is very rare with an incidence of only 1-1.5% among all salivary gland tumors. The diagnostic criteria for benign myoepithelioma were laid down on the basis of the work of Barnes and Sciubba. A 30-year-old lady presented to our university with a mass slowly increasing in size. There were no aggravating and/or relieving factors found. On examination a 3 × 3cm diffuse swelling was found around the right pre auricular area. Fine Needle Aspiration Cytology (FNAC) was performed. The findings were suggestive of a pleomorphic adenoma. The patient underwent a right sided superficial parotidectomy to remove the tumor. The final histopathology report revealed the tumor to be a myoepithelioma. Myoepithelioma is a benign salivary gland neoplasm formed almost entirely of myoepithelial cells arranged in a sheet, island or cord-like fashion. On CT scans, it presents as a well-circumscribed homogenous lesion with lobulated or smooth margins. Myoepitheliomas may also have nodules that enhance under contrast and areas of linear bands that do not. The recommended treatment for a myoepithelioma is complete surgical excision with wide margins. It has a very low recurrence rate compared to the 15-18% recurrence rate for pleomorphic adenomas. Utilization of immunohistochemical staining is of utmost importance in suspected myoepithelioma cases to ensure proper treatment and follow-up. Myoepitheliomas are rare tumors which must be included in the differential if a patient presents with a tumor of characteristics similar to those described above. Immunohistochemistry and electron microscopy are useful tools for the diagnosis of myoepitheliomas.

The role of 18F-FDG PET/CT scan compared to CT-scan alone for lymph node staging before radical cystectomy in patients with bladder cancer

BackgroundAccurate Lymph node (LN) staging before radical cystectomy (RC) in patients with bladder cancer (BC) is crucial to improve patient's management. 18F-fluorodeoxyglucose positron-emission tomography-computed tomography (FDG-PET-CT) become widely used in the loco-regional staging of BC. The diagnostic performance of PET-CT in preoperative LN staging of BC is still unknown due to lacking large trials. ObjectivesWe aim to evaluate the diagnostic value of PET-CT scan, compared with CT scan alone for preoperative LN staging of BC. Patients and methodsFrom January 2010 to November 2020, we retrospectively reviewed the records of 300 patients undergoing RC for muscle-invasive BC and high-risk non-muscle-invasive BC. All patients had PET-CT and CT of abdomen and pelvis to assess for pelvic LN metastases before RC. Patients were excluded from analysis if they had neoadjuvant chemotherapy (NAC). Sensitivity, specificity, and accuracy for detecting pelvic LN metastases were determined by comparing the results of the FDG PET-CT and CT alone to the final histopathology reports obtained after RC. ResultsLN metastasis was confirmed histology in 134 patients (44.7%). On a patient-based analysis, PET–CT, and CT showed a sensitivity of 40.3% and 13.4 %, respectively, a specificity of 79.5% and 86.7 %, respectively, positive predictive value (PPV) of 61.4% and 45%, respectively, and negative predictive value (NPV) of 62.3% and 55.4%, respectively. The diagnostic accuracy of PET-CT scan depends on multiple preoperative and postoperative factors. ConclusionPET-CT is more accurate than CT-scan alone for preoperative LN staging in patients with BC.