Prevalence Of Squamous Cell Carcinoma Research Articles

FREQUENCY OF SQUAMOUS CELL CARCINOMA IN POST BURN PATIENTS

Burn injuries, particularly those leading to chronic scars, can predispose individuals to the development of squamous cell carcinoma (SCC). The risk of malignant transformation increases with burn severity and long-term scarring. Understanding the prevalence of SCC in post-burn patients is crucial for implementing preventive and management strategies. Objective: To assess the frequency of squamous cell carcinoma (SCC) in patients with post-burn scars and evaluate associations between demographic and burn-related factors with the development of SCC. Methods: A prospective descriptive study was conducted on 70 patients with a history of burn injuries and resulting scars. The study was carried out over a defined period at a tertiary care hospital. Patient demographic variables such as age, gender, socioeconomic background, and education level were collected. The severity of burns was categorized as partial-thickness or full-thickness, and the aetiology of burns was classified as thermal, chemical, or electrical. Burn locations were also documented. Histopathological examination of biopsy specimens from suspicious scars confirmed SCC diagnosis. Statistical analysis using chi-square tests was employed to identify associations between categorical variables and SCC occurrence. Results: Of the 70 patients included, 53 were males (75.7%) and 17 females (24.3%), with a mean age of 53.97 ± 4.91 years. Full-thickness burns were observed in 57.1% of the patients, while 42.9% had partial-thickness burns. The most common burn cause was thermal (45.7%), with the lower extremities being the most affected region (57.1%). SCC developed in 8.6% (6 out of 70) of the patients. The latency period for SCC ranged between 28 and 37 years, with an average of 31.5 years. Full-thickness burns were more commonly associated with SCC development compared to partial-thickness burns. Conclusion: The study reported a frequency of 8.6% for squamous cell carcinoma in patients with post-burn scars. Full-thickness burns were associated with a higher risk of SCC development. Long-term surveillance and proactive management of burn scars are critical in preventing malignant transformations.

Uncommon and Challenging Phenotypes of High-Risk Human Papillomavirus-Associated Head and Neck Carcinomas Revealed by High-Throughput Studies.

HPV- associated squamous cell carcinoma (SCC) is uncommon in non-oropharynx sites and not well characterized. This study aims to investigate uncommon phenotypes of HPV-associated head and neck carcinoma, the prevalence and morphologic spectrum of HPV-associated SCC in the oral cavity, larynx and hypopharynx. P16 immunostaining and HPV E6/7 in situ hybridization (ISH) were performed on tissue microarrays comprised of SCCs from different anatomic sites: oropharynx (n = 270), hypopharynx (n = 52), oral cavity (n = 95) and larynx (n = 123). Tumors were classified as HPV-associated based on a positive E6/7 ISH testing. RNA sequencing was performed on several selected cases. 66% oropharynx SCCs (OPSCCs) were HPV-associated; all were p16/HPV testing concordant except one which was p16 negative. The p16-/HPV + OPSCC resembled similar gene expression signature with p16+/HPV + OPSCCs by transcriptome analysis. 6/95 (6%) oral cavity SCCs were HPV-associated, all from male patients and 5/6 (83%) arose from the floor of mouth. Morphologically, 3/6 (50%) showed keratinizing SCC and 5/6 (83%) demonstrated HPV-associated squamous dysplasia in adjacent mucosa. 1/123 (less than 1%) larynx SCCs and 0/52 hypopharynx SCCs were HPV-associated. Although uncommon, p16 negative HPV-associated OPSCC can occur, emphasizing the importance of judicious HPV testing. The morphology of HPV-associated oral cavity SCCs may deviate from prototypic nonkeratinizing SCC, making them difficult to recognize. Presence of HPV-associated squamous dysplasia could serve as a morphologic clue.

All that is squamoid is not squamous: A rare case of Squamoid Eccrine Ductal Carcinoma presenting as an intranasal mass

Abstract Introduction/Objective Squamoid eccrine ductal carcinoma (SEDC) is a rare adnexal tumor that poses diagnostic challenges because of the rarity, variable clinical presentation, and misdiagnosis on superficial biopsy sampling. Methods/Case Report We report a 52-year-old immunosuppressed male, status-post kidney and heart transplants who presented with an anterior nasal mass, the biopsy of which was interpreted as squamous cell carcinoma (SCC). Resection revealed a 2.5cm intranasal mass eroding through the hard palate. Histology showed a biphasic tumor arising from nasal vestibular skin with a superficial squamoid component (p40 positive) and a deeply invasive component demonstrating ductal differentiation (CEA positive) consistent with SEDC. SEDC has a predilection towards skin of head and neck region but SEDC presenting as an intranasal mass has not been reported. In our case, the tumor arose from nasal vestibular skin with destructive bony invasion within the nasal cavity. The patient’s long- term immunosuppression likely played a role in the etiopathogenesis and aggressive progression of this tumor. Interestingly, he also had history of multiple sebaceous carcinomas and cutaneous T-cell lymphoma with no known genetic predisposition, further implicating immunosuppression as the key risk factor for development of his cutaneous malignances. Results (if a Case Study enter NA) N/A Conclusion This case exemplifies the potential diagnostic pitfalls in squamoid lesions of the head and neck. Given the overwhelming prevalence of conventional SCC, rarer tumors with squamous differentiation often are not considered in the differential diagnosis, especially of an intranasal mass. A superficial biopsy often is misdiagnosed as SCC due to the lack of representation of deep-seated ductal components. A high index of suspicion and adequate examination of deeper aspects of the lesion are imperative for accurate diagnosis.

Cornulin as a Key Diagnostic and Prognostic Biomarker in Cancers of the Squamous Epithelium.

The prevalence of squamous cell carcinoma is increasing, and efforts that aid in an early and accurate diagnosis are crucial to improve clinical outcomes for patients. Cornulin, a squamous epithelium-specific protein, has recently garnered attention due to its implications in the progression of squamous cell carcinoma developed in several tissues. As an epidermal differentiation marker, it is involved in skin anchoring, regulating cellular proliferation, and is a putative tumor suppressor. The physiologically healthy squamous epithelium displays a considerable level of Cornulin, whereas squamous cell carcinomas have marked downregulation, suggesting that Cornulin expression levels can be utilized for the early detection and follow-up on the progression of these types of cancer. Cornulin's expression patterns in cervical cancer have been examined, and findings support the stepwise downregulation of Cornulin levels that accompanies the progression to neoplasia in the cervix. Additional studies documented a similar trend in expression in other types of cancer, such as cutaneous, esophageal, and oropharyngeal squamous cell carcinomas. The consistent and predictable pattern of Cornulin expression across several squamous cell carcinomas and its correlation with key clinicopathological parameters make it a reliable biomarker for assessing the transformation and progression events in the squamous epithelium, thus potentially contributing to the early detection, definitive diagnosis, and more favorable prognosis for these cancer patients.

Prevalence of Squamous Cell Carcinoma of The Tongue In Dr. Hasan Sadikin General Hospital During 2017 – 2022

Introduction: Squamous cell carcinoma is the most common malignant neoplasm in the oral cavity, accounting for 90% of all malignancies in the oral cavity. Exposure of the oral epithelium to carcinogenic substances can cause squamous cell carcinoma. This study was show the prevalence of squamous cell carcinoma of the tongue in West Java which is used as education for the prevention of squamous cell carcinoma of the tongue. Purpose: This research is a descriptive study and carried out using purposive sampling method. The sample in this study were patients with a diagnosis of squamous cell carcinoma of the tongue at Dr. Hasan Sadikin Hospital Bandung during January 2017 - January 2022 who had been confirmed by histopathological examination results. Data analysis will be carried out on secondary data from collected medical records and the results of the pathologist's interpretation, then the results of the data analysis will be arranged and presented in tabular and percentage form. Methods: The data obtained were 218 cases. Based on age, the most patients were in the age group above 48 years (58%). Based on gender criteria, it shows more women (57%). Based on domicile criteria, the highest domicile was in Bandung (38%). Based on family history criteria, there were 215 patients with no family history or 99%. Based on the predisposing factor criteria, it shows more patients with a history of chronic irritation (48%). Based on the mass size criteria, it shows more patients with mass size T4 (60%). Based on KGB criteria, it shows more patient showed N1 lymph nodes involvement (63%). Based on tumor metastasis criteria, it shows more patients with Mx tumor metastasis (50%). Based on the therapy status criteria, it shows more patients with combined therapy (32%). Results: Type the result of your research, including statistical analysis. Conclusion: Patients suffering from squamous cell carcinoma in the tongue are mostly patients over 48 years old with female gender who live in Bandung City, West Java, and have no family history but have predilection factors such as irritation and infection. The size of the tumor mass in patients with squamous cell carcinoma mostly has a mass size > 3 cm, with lymph node involvement mostly on the ipsilateral with a size < 3 cm and metastasis to other organs is difficult to assess due to lack of supporting modalities. The therapy received was mostly combined therapy (surgery and chemotherapy or radiotherapy) Keywords: Squamous cell carcinoma of the tongue, prevalence, patient characteristics

Retrospective Research of Cases of Oral Mucosal Diseases: Diagnosis and Management Trends.

The purpose of this retrospective study was to look into patterns in the diagnosis and treatment of oral mucosal disorders over a 12-year period in a tertiary care environment. A comprehensive review of medical records from a Tertiary Care Center was conducted, encompassing 2010-2022. Data on patient demographics, clinical presentations, diagnostic methods, treatment modalities, and outcomes were systematically analyzed. Descriptive statistics and trend analyses were employed to discern patterns and changes over time. A total of 500 cases were included in the research, with a mean age of 42.5 years. Aphthous ulcers, oral lichen planus, and candidiasis were the predominant diseases, collectively constituting 58% of cases. Diagnostic modalities varied, including biopsy and imaging. Treatment modalities ranged from topical agents to surgical procedures, tailored to specific diagnoses. The prevalence of squamous cell carcinoma was noteworthy at 8%. This research provides insights into the evolving landscape of oral mucosal disease diagnosis and treatment in tertiary care. Identified trends emphasize the importance of individualized care, advancements in diagnostic techniques, and ongoing research collaboration. Addressing challenges identified in this research is crucial for enhancing patient outcomes and shaping future research directions.

Prevalence of cervical precancers or cancers in women with ASC-H/HSIL cytology according to Aptima HPV (AHPV) assay-detected HPV genotypes and age.

Objective: Aimed to potentially risk-stratify patients with different cervical cytology diagnoses, by HPV genotypes and/or age, we have conducted a series of studies to examine the prevalence of cervical precancers and cancers for women with different cytology diagnoses. This paper will be focusing on patients with ASC-H/HSIL cytology. Methods: In total, 1183 patients aged 20-78 years with atypical squamous cells, cannot rule out HSIL (ASC-H)/HSIL by cytology underwent AHPV assay and cervical biopsy in a developed region in southern China were included in this study. Results: Overall, 59.2% women with ASC-H/HSIL cytology had cervical intraepithelial neoplasia (CIN)2/3 lesions while 1.6% had adenocarcinoma in situ (AIS) lesions. Compared to other groups, HPV-16+ group (80.8%) showed a significantly higher prevalence of CIN2/3 than other genotype+ groups (p<0.0001). Further, HPV-16+ (9.3%) or HPV-18/45+ (6.3%) group showed a significantly higher prevalence of squamous cell carcinoma (SCC) than other genotype+ groups (p<0.0001). The prevalence of AIS glandular lesions in HPV-18/45+ group (13.8%) is significantly higher than other genotype groups (p<0.0001). When stratified by age, younger group showed a significantly higher prevalence of CIN2/3 (p=0.009) while older group presented an obvious higher prevalence of SCC (p<0.0001). Conclusions: In this patient population, among women with ASC-H/HSIL cytology, HPV positive groups are at significantly higher risk of CIN2/3 compared to HPV negative group. Specifically, prevalence of CIN2/3 and SCC is significantly higher in HPV-16+ group while AIS lesions are more prevalent among HPV-18/45+ patients. In addition, younger group showed a significantly higher prevalence of CIN2/3 while older group presented an obvious higher prevalence of SCC.

Correlation of immediate prevalence of cervical precancers and cancers with HPV genotype and age in women with atypical glandular cells cytology: A retrospective analysis of 369 cases.

This study aims to assess the immediate risk of cervical precancers and cancers in women with atypical glandular cells (AGC) cytology, based on high-risk human papillomavirus (hrHPV) genotypes and age. A retrospective analysis was conducted on 369 cases of AGC with immediate follow-up biopsy results, including 299 AGC-not otherwise specified (NOS) and 70 AGC-favor neoplastic (FN). Among the 369 AGC cases, 127 tested positive for hrHPV (34.4%). The predominant high-risk type was other 11 genotypes (44.1%), followed by 16+ (29.1%), 18/45+ (26.0%), and 16 and 18/45 double-positive (0.79%). Precancers and cancers were detected in 30.4% (112 of 369) and 9.8% (36 of 369) of cases, respectively. The HPV-18/45+ group had notably higher adenocarcinoma in situ and adenocarcinoma (AIS+) prevalence compared to other 11 genotype groups (p<.0001 and p=.001, respectively). The HPV-16+ group showed significantly higher high-grade cervical squamous epithelial lesion and squamous cell carcinoma prevalence than other 11 genotype groups (p<.0001 and p=.017, respectively). Using 40-year cutoff, older women had significantly higher prevalence of abnormal glandular lesion+lesions (17.6% vs. 7.6%, p=.005) and adenocarcinoma (AC) (12.4% vs. 2.5%, p=.001). Using 50-year cutoff, older women had higher prevalence of squamous cell carcinoma (SCC) (3.3% vs. 0.4%, p=.042) and AC (15.2% vs. 5.8%, p=.005). Subgroup analysis revealed that AGC-FN women showed more severe cervical pathology than AGC-NOS women (p<.001). AGC women have a significantly increased risk of cervical precancerous lesions and cancer. HPV genotyping and patient age factors need to be taken into consideration in the clinical management process of AGC patients.

Inflammatory Bowel Disease and the Risk of Anal Squamous Intraepithelial Lesions and Anal Cancer in Men Who Have Sex With Men.

The risk of anal cancer is increased in patients with human immunodeficiency virus (HIV), inflammatory bowel disease (IBD), and among men who have sex with men (MSM). High grade squamous intraepithelial lesions (HSILs) are precursor lesions to anal squamous cell carcinoma (SCC), and treatment of these lesions can decrease progression to anal SCC. This study aims to determine the prevalence of HSIL and anal cancer among MSM patients with and without IBD referred for anal cancer screening. This is a retrospective study of all MSM patients seen at an anal squamous intraepithelial lesions (aSILs) and anal cancer screening specialty clinic. Data were manually and electronically collected from clinical documentation and pathology results for the primary outcomes of HSIL and anal cancer. Demographics, HIV status, IBD disease status, disease phenotype, and immunosuppressive medication use were collected through the electronic health record. Descriptive statistics were used. In all, 4623 patients were included for analysis. Among 57 MSM patients with IBD, 25 (43.9%) had a history of HSIL, and 2 (3.5%) had a history of anal cancer. Among 4618 MSM patients without IBD, 2417 (52.3%) had a history of HSIL, and 139 (3.0%) had a history of anal cancer (P = .744). Rates of HIV were 49.1% among MSM patients with IBD and 69.8% among MSM patients without IBD (P = .001). There remained no difference in prevalence of HSIL and anal cancer between groups when adjusting for HIV status. Among IBD patients, only 21.6% were referred for screening by their gastroenterologist. Among MSM with and without IBD, both groups had an equally high prevalence of HSIL and anal SCC. Awareness of appropriate surveillance to identify aSIL in MSM patients with IBD is needed among gastroenterologists.

Prevalence of Squamous Cell Carcinoma of Oral Cavity at Oral and Maxillofacial Surgery Department Dr. Hasan Sadikin Hospital Period of 2019-2020

Background: International Agency Data for Research on Cancer (IARC) in 2018 showed that cancer of the lips and oral cavity was ranked the 17th most common cancer in the world, there were 354,864 new cases of oral cancer in the world and cases of death from oral cancer were 177,384. case. New cases of oral cancer in Indonesia in 2018 were 5,078 cases and cases of death caused by oral cancer were 2,326 cases. Research on the characteristics of squamous cell carcinoma in the oral cavity in Indonesia is still relatively low. Objective: To analyze the prevalence of squamous cell carcinoma patients in the oral cavity at the Department of Oral and Maxillofacial Surgery, Dr. Hasan Sadikin Hospital Bandung from January 2019 to December 2020. Methods: Retrospective observational study by taking medical record data of patients with oral squamous cell carcinoma which had been clarified from histopathological results at the Oral Surgery Clinic, Dr. Hasan Sadikin Bandung. The sampling process was carried out using a purposive sampling method. The variables in this study were age, gender, location of the lesion, histopathological features, duration of the lesion and the complications caused. Data analysis using Microsoft Excel program. Results: The number of respondents aged 25-36 years as many as 4 people or 14%, ages 37-48 years as many as 7 people or 24%, and ages over 48 years as many as 18 people or 62%. There were 12 male patients or 41% and 17 female patients or 59%. Patients with a history of smoking as many as 10 people or 33%, a history of chronic irritation as many as 6 people or 20% and others as many as 14 people or 20%. The results of anatomical pathology showed that patients with poorly differentiated were 0 people or 0%, moderately differentiated were 9 people or 41%, well differentiated were 12 people or 55%, and others were 1 person or 4%. Conclusion: The age criteria of patients with the most squamous cell carcinoma are over 48 years old as many as 18 people or 62%. Based on the gender criteria, the patients with the highest incidence of squamous cell carcinoma tumors were 17 people or 59% female. anatomical pathology well differentiated as many as 12 people or 55%. Keywords: squamous cell carcinoma, oral cancer, patient characteristics

Trouble-makers in cytologic interpretation of the uterine cervix.

The development and standardization of cytologic screening of the uterine cervix has dramatically decreased the prevalence of squamous cell carcinoma of the uterine cervix. Advances in the understanding of biology of human papillomavirus have contributed to upgrading the histologic diagnosis of the uterine cervix; however, cytologic screening that should triage those that need further management still poses several difficulties in interpretation. Cytologic features of high grade intraepithelial squamous lesion (HSIL) mimics including atrophy, immature metaplasia, and transitional metaplasia, and glandular lesion masquerades including tubal metaplasia and HSIL with glandular involvement are described with accentuation mainly on the differential points. When the cytologic features lie in a gray zone between the differentials, the most important key to the more accurate interpretation is sticking to the very basics of cytology; screening the background and cellular architecture, and then scrutinizing the nuclear and cytoplasmic details.

Predictors of Survival in Veterans with Head and Neck Cancer Treated Surgically.

Background: Squamous cell carcinoma (SCC) accounts for 90% of all head and neck cancers. In veterans, the prevalence of head and neck SCC is nearly twice as high compared with the civilian population. Neck dissection plays an important role in the treatment algorithm for patients with head and neck SCC. The aim of this manuscript was to investigate predictors of survival in patients with head and neck SCC who underwent curative treatment. Methods: Patients with head and neck SCC who underwent treatment with curative intent were included in this study. Data collected included clinical-demographic characteristics, tumor characteristics, and outcome. The primary endpoint was 3-year overall survival (OS), and the secondary endpoints were disease recurrence and distant metastases. Results: A total of 149 patients met inclusion criteria, and most patients were treated with surgery plus adjuvant chemoradiation (52%). The 3-year OS for the entire cohort was 55.7%. There was no statistically significant difference in mortality when comparing the various treatment types. Black patients (hazard ratio [HR] = 1.70, P = .023) and other non-white patients (HR = 3.88, P = .027) had worse 3-year OS compared with white patients. Advanced tumor classification (T4a) was also associated with worse 3-year OS (HR = 3.088, P = .003) and increased risk of cancer recurrence or distant metastases (HR = 3.34, P = .013). Conclusions: Risk factors linked to poor survival among this cohort of veterans with head and neck SCC included non-white race and advanced tumor classification. Neck dissection remains an integral aspect of the treatment algorithm for SCC of the head and neck and can provide regional control of malignant disease.

Prevalence and anatomopathological characterization of cutaneous squamous cell carcinomas with regional and distant metastases in dogs and cats: 20 cases (1985-2020).

The aim of this study was to assess the prevalence of regional and distant metastases from cutaneous squamous cell carcinomas (SCCs) in dogs (n=11) and cats (n=9) in a retrospective case series over 36 years (1985-2020), as well as to characterize its macroscopic aspects (location and size), degree of differentiation (well, moderately and poorly differentiated [WD, MD and PD, respectively]) and the rate of cell proliferation, by counting the AgNORs. Immunohistochemistry (IHC) was used to identify patterns of tumour migration and invasion (islands, ribbons, cords, small aggregates, individual cells [fusiform and amoeboid]) and to evaluate the intensity of desmoplasia and the amount of myofibroblasts. The prevalence of metastatic SCCs was 4.39% (21/478), being 3.8% in dog (12/309) and 5.3% in cat (9/169). Metastases affected lymph nodes in all dogs and 66% (6/9) of cats, and less frequently distant organs. Primary tumours predominantly affected the abdominal skin in dogs and the nasal planum in cats. Among the 20 cases, 52% were MDs, 34% were WDs, and 14% were PDs. Histological lesions suggestive of exposure to chronic solar radiation were present in 57% (8/14). The main patterns of tumour migration and invasion were islands for WD SCCs and individual cells for PD SCCs. MD SCCs had a mix of patterns. In cats, individual spindle cells were restricted to PDs. A marked desmoplastic reaction was more associated with PD SCCs and often with MDs. This study highlights that the prevalence of SCC metastases in dogs and cats is predominantly regional. The IHC was essential in the identification of individual fusiform keratinocytes, whose presence in surgical margins may represent a greater risk of recurrence. Although the presence of myofibroblasts was observed in all infiltrative and metastatic tumours, further studies evaluating these cells may be important to better understand their role in the tumour microenvironment of cutaneous SCCs with metastasis in dogs and cats.

Correlation of immediate prevalence of cervical precancers and cancers with HPV genotype and age in women with ASC-US/hrHPV+: a retrospective analysis of 2292 cases

AimsTo stratify the risk of cervical precancers (high-grade squamous intraepithelial lesion (HSIL) and adenocarcinoma in situ (AIS)) and cancers (squamous cell carcinoma (SCC) and adenocarcinoma) based on distinct high-risk human...

Prevalence of Squamous and Basal Cell Carcinomas in African Albino Skin Cancer Lesions: A Systematic Review and Meta-Analysis of Proportion

Objective To estimate the prevalence of cutaneous SCC and BCC in all histologically confirmed skin cancer lesions in African albinos.The following five databases are as follows: African Journals Online (AJOL), PubMed, Europe PMC, and Google Scholar were searched for relevant articles. Study Selection: included studies were case series and cross-sectional studies of histologically confirmed skin cancers in African albinos. Data extraction and synthesis: data extraction and synthesis was informed by the meta-analysis of observational studies in epidemiology guideline. By random effect meta-analysis, we calculated the pooled prevalence of SCC and BCC in skin cancer lesions of the African albinos. Result We abstracted 695 skin cancer lesions from 540 African albinos (275 male and 241 female albinos with sex not stated in 24 subjects). There were 419 SCCs and 249 BCCs. By meta-analysis, the pooled prevalence of SCC is 64% (95% CI; 50–77%). The prevalence for BCC is 31% (95% CI; 19–45%). Conclusion Overall, squamous cell carcinoma is the predominant type of keratinocyte carcinoma reported in African albinos. SCC is preponderant in case series of surgical excision biopsies while BCC predominates in studies reporting on albino skin surveillance programmes.

RETROSPECTIVE ANALYSIS OF MALIGNANT ORAL INJURIES DIAGNOSED IN A DENTAL SPECIALTY CENTER

<h3>Objectives</h3> To carry out a retrospective analysis of the prevalence of malignant oral lesions in a dental specialties center. <h3>Study Design</h3> A retrospective quantitative study of patients seen in the stomatology sector from 2010 to 2019. <h3>Results</h3> In this period, 818 biopsies were performed, with 706 cases of benign lesions, 58 potentially malignant oral lesions, and 54 malignant lesions. Of the patients diagnosed with malignant oral lesions, males were more affected (77.78%), the predominant age group was over age 50 years, and the most prevalent anatomic site was the tongue (29, 63%), followed by the lower lip (22, 22%). Regarding habits, 72.22% were smokers and 5.56% used tobacco and alcohol. Among the lesions, the prevalence of squamous cell carcinoma (SCC) was 88.89%, carcinoma in situ and basal cell 3.70%, and mucoepidermoid and leiomyosarcoma carcinoma 1.85%. Regarding the histopathologic changes in the differentiation of SCC, 48.15% were differentiated, 31.48% were well differentiated, and 9.26% were poorly differentiated. <h3>Conclusions</h3> This research agrees with the studies already published, finding a higher prevalence of malignant lesions in men over 40 years old, with SCC in the tongue being the most common and associated with risk factors such as smoking.

Preliminary Study on Prevalence of P16-Positive Squamous Cell Carcinoma of the Oral Cavity, Oropharynx and Larynx in Rizal Medical Center and its Histomorphologic Correlation

Background. A considerably large portion of the cases of cancer, particularly squamous cell carcinoma (SCC) involving the head and the neck may be due to consumption of tobacco and alcohol. However, its increase in occurrence at specific sites of the head and neck may indicate the possibility of other etiological factors. One of which is infection by certain high-risk human papillomavirus (HPV). P16 immunochemistry serves as a very good surrogate marker of active HPV in these tumors. The detection of HPV-related head and neck cancers have relevance in clinical practice because of its prognostic implications. Objectives. The general objective of this study is to determine the prevalence of p16-positive squamous cell carcinoma in the oral cavity, oropharynx, and larynx in Rizal Medical Center from January 2019 to December 2019.&nbsp; The specific objective is to compare the Hematoxylin and Eosin (H&amp;E) stain histomorphology (keratinization and mitotic activity) of p16-positive versus p16-negative specimens. Methodology. This is a cross-sectional study which included all routine histopathology specimens coming from the oral cavity, oropharynx and larynx in Rizal Medical Center for the year 2019 with a diagnosis of squamous cell carcinoma. The tissue specimens considered were those that measured at least 1 cm in diameter, or aggregate diameter if tissue is fragmented. The slides of all eligible cases were reviewed and immunohistochemically stained for p16. The p16 IHC slides were read as either positive or negative, while the mitotic activity and keratinization were observed in the H&amp;E-stained slides. The interpretation of the diplomate pathologists for each of the slides were documented and corresponding statistical analyses were performed. Results. P16 IHC showed twenty-one (88%) p16 negative cases and three (12%) p16 positive cases. In terms of mitosis, ten cases have mitosis falling within the 1-10 per high power field (HPF) range (42%), six within 11-20 per HPF (25%), and 8 cases have ≥21 mitosis per HPF (33%). In terms of keratinization, three cases are non-keratinizing (12%) and twenty-one cases are keratinizing (88%).&nbsp; There is significant difference in the keratinization histology (p&lt;0.05) of the p16-positive versus the P16-negative cases. On the other hand, no significant difference in the mitotic activity (p&gt;0.05) was noted. Conclusion. There is a low prevalence of HPV-related SCC of the oral cavity, oropharynx, and larynx in Rizal Medical Center.&nbsp; The histomorphologic findings confirm that keratinization, significantly predicts HPV status in oropharyngeal SCC. Mitotic activity may not be reliable in predicting the HPV status or p16 IHC reactivity of a case. Keratinization in oropharyngeal SCCs may provide valuable information in certain instances, particularly when HPV testing is not immediately available, although the combined tumor morphology and p16 IHC is more ideal.

A Descriptive Study on the Prevalence of Squamous Cell Carcinoma of Head and Neck

Objective: To determine the risk factors and the sites involved so as to promote the education in the community and improve the Treatment besides prevention of the disease. The mean age of patients enrolled in the study is 52±8.31 years and the percentage of the males is higher as compared the females i.e 57% of patients were males while 43% females. And among the patients 69% belonged to city areas and 31% were from rural community. Material and Methods: The design of this study was Descriptive study. This study was conducted at Mardan medical complex, Mardan and the duration of this study was from July 2020 to May 2021. 100 patients were enrolled in the study and Biopsies were taken and then sent to the laboratory for histopathology. Disease primarily of the region, mucosal disease. Children with congenital tumors, mentally retarded cases. Conclusion: The squamous cell carcinoma is a major problem due to its high morbidity and mortality. And it is the most common malignancy of head and neck region. The most common area involved is hypo-pharyngeal area Keywords: Mucosal Disease, Epidemiology, Malignancy, Hypo-Pharyngeal, Congenital Tumors

Squamous cell carcinoma of the conjunctiva. Case report.

IntroductionThe prevalence of squamous cell carcinoma of the eyeball is low, and this is a rare condition. There are multiple therapeutic strategies for the treatment and depend on the degree of local involvement and extension of the tumor which, in turn, will have an impact on the patient's prognosis.Presentation of caseWe present a case of a patient with a mass of progressive growth on the left eyeball whit vision damage. The biopsy showed a squamous cell carcinoma of the conjunctiva, and imaging studies showed orbital invasion cT4bN0cM0, so surgery was indicated. The surgery was done with macroscopic margins of 5 mm. After resection, a radial free flap reconstruction was performed. Adjuvant treatment with radiotherapy was performed without complications. After six months, the patient manifested an improvement in his quality of life, and there is no evidence of relapse.DiscussionThe prevalence of squamous cell carcinoma of the conjunctiva is low. The most important risk factor is exposure to UV rays. Most are derived from conjunctival intraepithelial neoplasms. There are topical management protocols with chemotherapeutic agents and in patients with ocular or orbital invasion, enucleation and exanteration are the treatments of choice.ConclusionThe squamous cell carcinoma of the conjunctive is rare. The management in the locally advanced tumors is surgical. The use of a radial free flap reconstruction is one of the reconstructive strategies to take into account, and the knowledge of additional strategies required to control the disease is important to ensure an optimal treatment.

Oral and maxillofacial cancer: A 35-year retrospective analysis at a referral dental hospital in Saudi Arabia

ObjectivesAs rates of oral and maxillofacial cancer (OMFC) continue to rise, the role of dentists in early detection and prevention has become increasingly important. The present study examined the frequency and pattern of OMFC cases diagnosed at a referral dental hospital. MethodsA retrospective analysis of all primary malignant neoplasms of the oral and maxillofacial area diagnosed at the Histopathology Laboratory of the Dental University Hospital, Medical City, King Saud University, Saudi Arabia from 1984 to 2020 was performed. ResultsA total of 242 patients had histologically diagnosed primary malignant neoplasms of the oral and maxillofacial area, accounting approximately 3.7% of the archives. The mean age of patients was 48.87 years, and the male-to-female ratio was 1.5:1. The most prevalent malignant neoplasm was squamous cell carcinoma (SCC) (58.3%), followed by mucoepidermoid carcinoma (11.6%). The tongue and gingiva were the most prevalent malignancy sites, accounting for 19.8% and 18.2% of the cases, respectively. The prevalence of SCC in patients over 50 years old (68.4%) was highly significantly greater than that in younger subjects (31.5%) (P < 0.0005). SCC was also more common in males (66.7%) than in females (33.3%) (P = 0.026). ConclusionOMFC primarily affecting the tongue and gingiva was the predominant in older male patients. SCC was the most frequent type of OMFC and was significantly associated with age older than 50 years. This study provides baseline data on the frequency of OMFC cases diagnosed for the first time by dental practitioners and warrants the need for increasing OMFC awareness among these clinicians.