Conization Research Articles

Preterm-birth-prevention with Lactobacillus crispatus oral probiotics: Protocol for a double blinded randomised placebo-controlled trial (the PrePOP study).

Effective spontaneous preterm birth (sPTB) prevention is an urgent unmet clinical need. Vaginal depletion of Lactobacillus crispatus is linked to sPTB. This trial will investigate impact of an oral Lactobacillus spp. probiotic product containing an L. crispatus strain with other Lactobacilli spp., on the maternal vaginal and gut microbiome in pregnancies high-risk for sPTB. A double-blind, placebo-controlled, randomised trial will be performed at the National Maternity Hospital Dublin, Ireland. Inclusion criteria are women with history of sPTB or mid-trimester loss, cervical surgery (cone biopsy or two previous large-loop-excision-of-transformation-zone) or uterine anomaly. The intervention is oral supplementation for twelve weeks with probiotic or identical placebo. The probiotic will contains: ◦ 4 billion CFU Lactobacillus crispatus Lbv 88(2x109CFU/Capsule) ◦ 4 billion CFU Lactobacillus rhamnosus Lbv 96(2x109CFU/Capsule) ◦ 0.8 billion CFU Lactobacillus jensenii Lbv 116(0.4x109CFU/Capsule) ◦ 1.2 billion CFU Lactobacillus gasseri Lbv 150(0.6x109CFU/Capsule). Investigators and participants will be blinded to assignment. The primary outcome is detectable L. crispatus in the vaginal microbiome after twelve weeks of treatment, measured using high-throughput DNA sequencing. A total of 126 women are required to detect a 25% increase in detectable L. crispatus. Secondary outcomes include impact of intervention on the gut microbiome and metabolome, rate of sPTB and mid-trimester loss, neonatal outcomes and maternal morbidity. This randomised trial will investigate ability of an oral probiotic containing L. crispatus to increase its abundance in the vaginal microbiome, both directly by horizontal transfer and indirectly via microbiome and metabolome of the gut.

Risk of residual/recurrent cervical diseases in HPV-positive women post-conization depends on HPV integration status

BackgroundIt is crucial to identify post-operative patients with HPV infection who are at high risk for residual/recurrent disease. This study aimed to evaluate the association between HPV integration and clinical outcomes in HPV-positive women after cervical conization, as well as to identify HPV integration breakpoints.MethodsThis retrospective study analyzed data of 791 women who underwent cervical conization for cervical intraepithelial neoplasia grades 2–3 (CIN2-3) between September 2019 and September 2023, sourced from the Fujian and Hubei cervical lesion screening cohorts. Among these, 73 women with HPV infection post-conization underwent HPV integration test within 3 months after a positive HPV test. HPV integration test was performed using the high-throughput viral integration detection (HIVID), a sensitive method for genome-wide survey of HPV integration breakpoints.ResultsAmong the 73 participants with HPV infection post-conization, 10 cases (13.7%) were positive for HPV integration. The logistic regression analysis showed a higher residual/recurrent lesions risk in patients with HPV integration (OR = 3.917, p = 0.048). According to the Kaplan-Meier analysis, age ≥ 45 years (p = 0.016) and HPV integration (p = 0.035) were associated with a higher risk of residual/recurrent CIN at the 1-year follow-up. HPV 52 accounted for the majority of HPV integration genotype (3/10, 30.0%). Surprisingly, HPV 16 had the highest number of HPV average integration sequencing reads (n = 129), followed by HPV 31, 58, 52, 59, 35, and 39. The study also identified 13 HPV breakpoints, including TP63, TLR4, USP10, etc.ConclusionsHPV integration was identified as an independent risk factor for residual/recurrent CIN in HPV-positive women post-conization. Women with positive HPV integration should pay attention to careful post-treatment follow-up.

Cervical Tuberculosis Mimicking Cervical Cancer in a Postmenopausal Woman: A Case Report

Cervical tuberculosis is a rare form of genital tuberculosis. A case of a 73-year-old woman who presented with cervical wall thickening on magnetic resonance imaging, suggesting an invasive malignant neoplasm, is documented. Cervical cone excision was performed for histopathological study. Microscopy showed epithelioid granulomas, without appreciable caseous necrosis, in the wall of the uterine cervix, associated with erosion of the overlying cervical mucosa. Histochemical stains for microorganisms (Ziehl–Neelsen, Grocott, and Warthin–Starry) were negative. Immunohistochemistry for Treponema pallidum revealed scarce, spiral-shaped bacilli, which raised the diagnostic possibility of secondary syphilis. The serological study for syphilis was negative, however. Polymerase chain reaction (PCR) tests for Mycobacterium tuberculosis and Treponema pallidum were performed in the formaldehyde-fixed, paraffin embedded tissue and resulted positive for Mycobacterium tuberculosis and negative for Treponema pallidum, confirming the diagnosis of cervical tuberculosis. Our objective was to report a rare case of cervical tuberculosis, discussing the advantages and limitations of complementary techniques used in the pathological diagnosis of infectious agents and highlighting diagnostic pitfalls. In conclusion, correct microbiological diagnosis requires the implementation of integrated workflows employing complementary techniques in a multidisciplinary setting to improve the accuracy of histopathological examination in infectious diseases.

Management of Pregnancy in a Patient with a History of Cervical Cancer: Case Report

Cervical cancer is one of the most common malignancies affecting women of reproductive age. Although surgical procedures such as conization or trachelectomy may offer the possibility of preserving fertility, they may also compromise cervical integrity, thereby increasing the risk of obstetric complications in subsequent pregnancies. This case report presents the management of a pregnant patient with a history of cervical cancer, thyroid dysfunction, and previous obstetric complications. The patient, a 38-year-old woman, conceived naturally after previous in vitro fertilization (IVF) attempts. Despite a complex medical history, including two prior cervical conizations for stage IA1 G1 cervical glandular carcinoma, the patient underwent successful antenatal care, delivery, and postnatal management. This report highlights the multidisciplinary approach and challenges encountered in managing pregnancies in patients with a history of cervical cancer and previous obstetric complications.

Endocervical Brush Cytology After Cervical Conization as a Predictor of Treatment Failure: A Prospective Cohort Study.

Endocervical curettage (ECC) is the gold standard for predicting the persistence of high-grade squamous intraepithelial lesions (HSIL) after cervical conization. However, ECC has a high rate of unsatisfactory samples and may be uncomfortable for women. Endocervical sampling with brush (ECB) has been proposed as an alternative to ECC, which, in addition to the cytological evaluation, allows performing HPV testing using the same sample. The authors compared ECC and ECB performed immediately after conization to identify women with persistent HSIL. This is a prospective single-center study, including 518 patients who underwent conization over a 10-year period (2012-2021). Immediately after treatment conization, the authors performed ECB sampling followed by ECC to all patients. They evaluated the accuracy of the 2 techniques for diagnosing persistent HSIL during follow-up. Persistent HSIL was identified in 8.9% of women. Eighteen percent of the ECC samples and only 7% of ECB cytology were unsatisfactory (p < .001). The accuracy of detecting persistent HSIL was similar for ECB and ECC (89.0%, 95% CI = 85.9-91.5 vs 90.8%, 95% CI = 87.7-93.2; p = .797). Adding HPV testing to ECB cytological evaluation increased the accuracy to 91.5% (95% CI = 88.8-93.6). ECB can be reliably used to identify women with persistent HSIL after conization, as its accuracy is similar to ECC, with a lower rate of unsatisfactory results. The technique allows adding HPV testing to cytological evaluation, improving the accuracy of the test.

Clinical Efficacy and Prognostic Factors of McDonald Cervical Cerclage in Pregnant Women with Cervical Incompetence

Background: This study aimed to evaluate the clinical efficacy and prognostic factors associated with McDonald cervical cerclage in pregnant women with cervical incompetence. Methods: We retrospectively reviewed medical records of 100 pregnant women with cervical incompetence who underwent prophylactic or therapeutic McDonald cervical cerclage between January 2021 and December 2022. The participants were divided into two groups: good prognosis (n = 37) and poor prognosis (n = 63). Baseline characteristics and pregnancy outcomes were compared between the two groups, and multivariate logistic regression was used to identify associated prognostic factors. Results: The good prognosis group showed lower rates of miscarriage and preterm birth and higher rates of full-term birth compared to the poor prognosis group, but these differences were not statistically significant. Multivariate logistic regression identified various independent risk factors influencing clinical outcomes of McDonald cerclage, including gravidity (odds ratio [OR] = 1.75), having more than two previous births (OR = 2.44), assisted reproductive technology (OR = 1.52), history of cervical conization (OR = 1.88), complete uterine cavity curettage (OR = 1.67), prolonged second stage of labor (OR = 2.19), cesarean section (OR = 1.48), cervical laceration (OR = 1.80), polycystic ovarian syndrome (OR = 1.60), and prophylactic cerclage (OR = 0.73). These factors demonstrated good predictive performance for the prognosis of patients with cervical incompetence, with an area under the curve of 0.793 and sensitivity and specificity values of 0.750 and 0.850, respectively. Conclusions: The identified risk factors, particularly having more than two previous births, prolonged second stage of labor, and a history of cervical conization, should be considered in the clinical management of pregnant women with cervical incompetence. The protective effect of prophylactic cerclage emphasizes the importance of early detection and timely intervention to improve pregnancy outcomes.

Evaluation of physical function and quality of life before and after non-radical surgical therapy (extra fascial hysterectomy or cone biopsy with pelvic lymphadenectomy) for stage IA1 (LVSI+) and IA2–IB1 cervical cancer (GOG-278)

Evaluation of physical function and quality of life before and after non-radical surgical therapy (extra fascial hysterectomy or cone biopsy with pelvic lymphadenectomy) for stage IA1 (LVSI+) and IA2–IB1 cervical cancer (GOG-278)

Evaluation of efficacy and fertility after non-radical surgical therapy (extra fascial hysterectomy or cone biopsy with pelvic lymphadenectomy) for stage IA1 (LVSI+) and IA2–IB1 (GOG-278) cervical cancer

Evaluation of efficacy and fertility after non-radical surgical therapy (extra fascial hysterectomy or cone biopsy with pelvic lymphadenectomy) for stage IA1 (LVSI+) and IA2–IB1 (GOG-278) cervical cancer

Research Progress of Immune Mechanisms Related to Persistent HPV Infection in CIN after Cervical Conization.

Persistent human papillomavirus (HPV) infection is associated with the grading of cervical intraepithelial neoplasia (CIN), high-risk HPV infection, multiple HPV infections, high HPV load, HPV infection of surgical margin, and age in CIN after conization. The immune mechanism is complex and is primarily related to vaginal microecology disorders, immune escape, immune response impairment, and the release of regulatory cytokines. Currently, the treatment methods for postoperative persistent HPV infection include surgical treatment, antiviral treatment, vaccination, and other approaches.

Development of a clinical prediction model for pathological upgrading in low-grade squamous intraepithelial lesions following cervical conization.

This study aimed to identify key factors influencing post-operative pathologic escalation in Chinese women with histologic cervical low-grade squamous intraepithelial lesions (LSILs) undergoing cervical conization and construct a predictive nomogram model. A retrospective analysis was conducted on 107 patients with LSIL from Bengbu City, Anhui Province, China, who underwent cervical conization at the First Affiliated Hospital of Bengbu Medical College from January 2019 to January 2023. Patients were categorized into groups based on post-operative pathological upgrade. Univariate and multivariate logistic regression analyses identified independent risk factors. A nomogram model was developed and evaluated for clinical predictive ability using calibration curves, the Hosmer-Lemeshow test, and decision curve analysis (DCA). Post-operative pathological upgrades were experienced by 39.3% of patients with LSIL. Independent risk factors for escalation included positive human papillomavirus (HPV)16/18/52/53/58 high-risk types (P < 0.05, OR = 4.95, 95% CI = 1.32-18.46), ThinPrep Cytology Test (TCT) results indicating high-grade squamous intraepithelial lesion (HSIL)/atypical squamous cells, cannot exclude a high-grade squamous intraepithelial lesion (ASC-H)/atypical glandular cells ( AGC) (P < 0.01, OR = 13.12, 95% CI = 3.10-55.50), and cervical transformation zone (TZ) type III (P < 0.05, OR = 6.10, 95% CI = 1.65-22.56). Based on these factors, the nomogram demonstrated good differentiation and calibration (area under the curve [AUC]: 0.744, 95% CI: 0.674-0.839). DCA indicated high clinical predictive value. HPV16/18/52/53/58 high-risk types, TCT HSIL/ASC-H/AGC, and colposcopic cervical TZ type III are independent risk factors for post-operative pathologic escalation in LSIL. Consideration of pre-operative HPV, TCT results, and cervical TZ type is crucial for effective triage and patient management. The constructed nomogram provides a practical tool for risk assessment of patients with LSIL undergoing cervical conization.

Fertility-sparing treatment with conization versus radical hysterectomy in patients with early-stage cervical cancer: inverse propensity score weighted analysis

ObjectiveTo report 20 years of experience with fertility-sparing surgery for patients with early-stage cervical cancer, comparing the oncological outcomes with outcomes for those who underwent a radical hysterectomy.MethodsPatients with pre-operative...

Evaluation of Cold Conization Indications and Results

Objective: The aim of this study was to determine the efficiency and indications of cold knife conization in the treatment of high-grade cervical lesions. Materials and Methods: This study included patients with high-grade cervical lesions treated with cold knife conization (CKC) within 9 years. Histopathological correlation analyses were carried out among the smear, colposcopic biopsy (CBx), CKC results, and total hysterectomy specimens available. Results: One hundred thirty-one cold knife cone biopsy cases were analyzed for this study. The most common pathology was cervical intraepithelial neoplasia (CIN) II–III, with a frequency of 64 (48.9%). Other conization results in order of frequency were as follows: CIN I at a rate of 29 (22.1%), Carcinoma (Ca) at 19 (14.5%), cervicitis at 14 (10.7%), and negative results at 5 (3.8%). Conclusions: CKC remains an acceptable option in the treatment of CIN and microinvasive carcinoma of the cervix, and the excellent diagnostic and therapeutic efficacy of CKC is well-known and confirmed. When properly performed, the procedure has a low risk of complications and provides an accurate histological representation of the disease process. It is also curative in most cases. Of course, excellent clinical results still require careful, long-term, and attentive follow-up.

Efficacy and Security of Improved Thumbtack-Type Cervical Cold Knife Conization to Treat Cervical High-Grade Epithelial Lesions

Efficacy and Security of Improved Thumbtack-Type Cervical Cold Knife Conization to Treat Cervical High-Grade Epithelial Lesions

The Pathological Characteristics of Cervical Conization and Cervical Intraepithelial Cancer Recurrence Rate Based on Different Age Groups

The Pathological Characteristics of Cervical Conization and Cervical Intraepithelial Cancer Recurrence Rate Based on Different Age Groups

Analysis of adverse late-term pregnancy outcomes after cervical cold knife conization

Objective: To investigate the effects of cervical cold knife conization (CKC) on preterm delivery, other pregnancy complications and neonatal outcomes, and explore the relationship between preterm delivery risk and the depth and volume of conization. Methods: The clinical data and pregnancy outcomes of 272 women who underwent CKC in Peking Union Medical College Hospital from January 2002 to March 2018 (conization group) and 1 647 pregnant women who gave birth in Peking Union Medical College Hospital during January to December 2019 (control group) were collected. The preterm delivery, premature rupture of membranes, other pregnancy complications and neonatal outcomes of the two groups were compared, and the relationship between the depth and volume of conization and the risk of preterm delivery in postoperative singleton pregnancy was analyzed. Results: (1) There were no significant differences between the two groups in delivery age, parity, proportion of singleton pregnancy, proportion of assisted reproductive technology (all P>0.05). (2) The rate of preterm delivery in the conization group was significantly higher than that in the control group [14.8% (39/264) vs 5.7% (91/1 589); χ2=28.397, P<0.001]. There were still significant differences in preterm delivery rates between the two groups at <34 weeks and 34-37 weeks (all P<0.01). There was no significant difference in the incidence of premature rupture of membrane between the two groups [23.5% (62/264) vs 23.4% (372/1 589); χ2=0.001, P=0.979], but the incidence of preterm premature rupture of membrane in the conization group was significantly higher than that in the control group [11.4% (30/264) vs 2.2% (35/1 589); χ2=56.132, P<0.001]. (3) The rate of cesarean section in the conization group was higher than that in the control group [59.6% (162/272) vs 38.8% (639/1 647); χ2=41.377, P<0.001]. The birth weight of preterm infants in the conization group was significantly higher than that in the control group [(2 409±680) vs (2 150±684) g; t=2.184, P=0.030]. However, there were no statistically significant differences in the incidence of gestational diabetes mellitus, hypertensive disorders in pregnancy, the birth weight of full-term infants, incidence of small for gestational age infant and neonatal intensive care unit admission rate between the two groups (all P>0.05). (4) The preterm delivery rates of coning depth >15 mm, cone size ≥2 cm3 and cone size <2 cm3 were higher than that in the control group (all P<0.05). When the coning depth ≤15 mm, the preterm delivery rate in the conization group was higher than that in the control group, but there was no significant difference (P=0.620). The rate of preterm delivery of pregnant women with coning depth >15 mm was significantly higher than those with coning depth ≤15 mm (RR=3.084, 95%CI: 1.474-6.453; P=0.001). There was no significant difference in the preterm delivery rate between pregnant women with cone size >2 cm3 and those with cone size ≥2 cm3 (RR=1.700, 95%CI: 0.935-3.092; P=0.077). Conclusion: The risk of preterm delivery and preterm premature rupture of membranes in subsequent pregnancies are increased after cervical CKC, and the risk of preterm delivery is positively correlated with the depth of cervical coning.

Assessment of malignant potential for HPV types 16, 52, and 58 in the uterine cervix within a Korean cohort

High-risk human papillomavirus (HR-HPV) is the primary carcinogen in uterine cervical carcinoma. While genotype-specific carcinogenic risks have been extensively studied in Western populations, data from Korean are sparse. This study evaluates the malignant potential of the three most prevalent HR-HPVs in Korea: HPV16, HPV52, and HPV58. We analyzed 230 patients who underwent cervical conization and had been tested for HPV within a year prior to the procedure, excluding those with multiple infections. This analysis was confined to patients with single HPV infections and assessed outcomes of CIN3+, which includes carcinoma in situ (CIN3) and invasive carcinoma. The incidence of invasive cervical cancer was 6.7% for HPV16, 1.7% for HPV52, and 2.0% for HPV58; however, these differences were not statistically significant (p = 0.187). The rate of CIN3+ for HPV16, HPV52, and HPV58 were 70.6%, 51.7%, and 58.8%, respectively. Despite the small sample size, which may limit the robustness of statistical analysis, the data suggest a higher observed risk with HPV16. These findings highlight the need for vigilant clinical management tailored to specific HPV genotypes and support the implementation of a nine-valent vaccine in Korea. Physicians should be aware of these genotype-specific risks when treating patients.

Sentinel node mapping, sentinel node mapping plus back-up lymphadenectomy, and lymphadenectomy in Early-sTage cERvical caNcer scheduled for fertilItY-sparing approach: The ETERNITY project

ObjectiveTo investigate the safety of sentinel node mapping for patients with early-stage cervical cancer undergoing cervical conization plus nodal evaluation. MethodsThe ETERNITY project is a retrospective, multi-institutional study collecting data of patients with early-stage cervical cancer undergoing fertility-sparing treatment. Here, we compared outcomes related to three methods of nodal assessment: sentinel node mapping (SNM), SNM plus backup lymphadenectomy (SNM + LND); pelvic lymphadenectomy (LND). ResultsCharts of 123 patients (with stage IA1-IB1 cervical cancer) were evaluated. Median patients’ age was 34 (range, 22–44) years. SNM, SNM + LND, and LND were performed in 32 (26 %), 31 (25.2 %), and 60 (48.8 %) patients, respectively. Overall, eight (6.5 %) patients were diagnosed with positive nodes. Two (3.3 %), three (9.7 %), and three (9.4 %) patients were detected in patients who had LND, SNM + LND, and SNM respectively. Considering the 63 patients undergoing SNM (31 SNM + LND and 32 SNM alone), macrometastases, micrometastases, and isolated tumor cells were detected in four (3.2 %), three (2.4 %), and one (0.8 %) patients, respectively. All patients with positive nodes discontinued the fertility sparing treatment. Other two patients (one (1.7 %) in the LND group and one (3.1 %) in the SNM group) required hysterectomy even after negative nodal evaluation. After a median follow-up of 53.6 (range, 1.3, 158.0) months, nine (7.3 %) and two (1.6 %) patients developed cervical and pelvic nodes recurrences, respectively. Disease-free (p = 0.332, log-rank test) and overall survival (p = 0.769, log-rank test) were similar among groups. ConclusionsIn this retrospective experience, SNM upholds long-term oncologic effectiveness of LND, reducing morbidity.

Paclitaxel and cisplatin/carboplatin plus tislelizumab in young patients with cervical cancer preserve fertility: Phase II prospective, single arm clinical study.

e17513 Background: Cervical function damage after fertility-sparing surgery has a lower pregnancy success rate. Chemotherapy (chemo) mainly plays an auxiliary role in the treatment of cervical cancer (CC), but its efficacy is limited. Recently, immunotherapy has shown remarkable progress in treatment of CC, potentially provide new treatment options for pts of childbearing age who require preservation of fertility. Herein, we conducted this study to evaluate the efficacy and safety of chemo plus tislelizumab (TIS) in young pts with CC who required fertility preservation. Methods: In this single arm, phase II trial, pts with histologically confirmed invasive, FIGO2018 stage IB1-IB3 or IIIC1r (localized cervical lesions) CC, and having fertility needs were enrolled. Eligible pts received 4 cycles chemo (175 mg/m2 paclitaxel + 70 mg/m2 cisplatin/AUC 5-6 carboplatin, Q3W) + TIS (200 mg, Q3W), followed by surgery-diagnostic cervical conization and sentinel lymph node (SLN) biopsy (IIIC1r stage with pelvic lymph node [PLN] systematic dissection)-upon achieving a radiographic complete response (CR). After surgery, pts will undergo 2-cycle chemo plus TIS therapy, if PLNs achieve a pathological complete response (pCR), regardless of the pCR status of localized cervical lesion. If the first cervical conization did not result in a pCR for localized cervical lesion only, a second conization was performed after 2-cycle chemo + TIS. Upon achieving pCR in both the cervical local disease and PLN, maintenance therapy (MT) with TIS will be continued for 1 year. Primary endpoint is pCR (SLN/PLNs + cervical conization) after surgery. The key secondary endpoints included clinical response to 4 cycles chemo + TIS, pregnancy rate, fertility rate, and treatment-emergent adverse events (TEAEs). Results: Between March 2022 and January 2024, 7 pts (mean age 31 years, range 27-38) were enrolled, with 2 pts (28.6%) having stage IIIC1r disease. All 7 pts received chemo plus TIS therapy; of these, 5 (71.4%) pts completed 4 cycles The objective response was achieved in 5 pts, with all complete response. Amenorrhea was observed in 3 of 5 pts (60%), with 2 recovering normal menstruation after chemo cessation, and 1 had finished the last chemo+TIS for 3 weeks and had not yet returned. During 4 cycles chemo + TIS therapy (n=7), the most common TEAEs of any grade were rash (71.4%), alanine aminotransferase increased (57.1%), neutrophil count decreased (57.1%), and white blood cell count decreased (57.1%). At data cutoff (median follow-up, 9 months, range 3.5-17), 1 pt experienced disease progression during MT, and 1 pt got pregnancy 3 months after completed MT. Conclusions: Chemo plus TIS could mediate tumor regression and eliminate micro-metastases with a tolerable safety profile, potentially allowing for fertility preservation in many pts for which this was not thought to be an option. Clinical trial information: ChiCTR2300067495.

Evaluation of malignant potential based on infection with high-risk human papillomaviruses 16, 52, and 58 in the uterine cervix.

e17511 Background: The high-risk human papilloma virus (HR-HPV) has been known as the most important carcinogen in uterine cervical carcinoma. Generally, gynecologists recommend medical interventions for patients diagnosed with HSIL or higher. Previous studies have evaluated genotype-specific risk for carcinogenesis. However, the genotype-specific risk remains still unclear due to some limitations of those studies. This study aimed to evaluate the malignant potential of the three most prevalent HR-HPVs in Korea. Methods: Patients who underwent uterine cervical conization were included. They had received HPV test within a year before the surgery and those exhibiting concurrent multiple infections with HR-HPVs were excluded. Of single infections with HR-HPV, the three most prevalent HR-HPVs were included to analyze. To evaluate their malignant potential, CIS+, including carcinoma in situ (CIS) and invasive carcinoma, was categorized in each HR-HPV group. The ratios of pathologic diagnoses and odds ratios for malignant potential were evaluated between the three most prevalent HR-HPVs. Results: Totally 230 patients were found to have a single infection with HR-HPV16, HR-HPV52, or HR-HPV58. Of the included patients, 119 (51.7%), 60 (26.1%), and 51 (22.8%) were noted to be infected with HR-HPV genotypes 16, 52, and 58, respectively. CIS was diagnosed in 59 (49.6%), 27 (45.0%), and 25 (49.0%) patients in the HPV16, HPV52, and HPV58 single infection groups, respectively ( p = 0.839). Invasive carcinoma, regardless of histology such as squamous cell carcinoma or adenocarcinoma, was diagnosed in 8 (6.7%), 1 (1.7%), and 1 (2.0%) patient in the HPV16, HPV52, and HPV58 single infection groups, respectively ( p = 0.187). The CIS+ ratio was not significantly different among the HPV16, HPV52, and HPV58 single infection groups (67 [56.3%] vs. 28 [46.7%] vs. 26 [60.0%], [ p = 0.460]). Conclusions: Among the Korean women with single HR-HPV infection, HPV16, HPV52, and HPV58 were the three most common genotypes, in descending order. Although HPV16 was the most prevalent among the three, its malignant potential was not significantly different from those of HPV52 and HPV58 in the uterine cervix. This result supports the need for a nine-valent vaccine against HR-HPVs, covering HPV52, HPV58, and HPV16.

Improving diagnostic of cervical dysplasia among postmenopausal women aged ≥50 years using local vaginal oestrogen treatment prior to colposcopy: study protocol for a multicentre randomised controlled trial (the IDEAL study)

IntroductionColposcopy is the most important diagnostic tool to detect cervical precancerous lesions and thereby prevention of cervical cancer. Due to age-dependent changes of the cervix, colposcopy is challenging in postmenopausal...