Low Grade Anal Canal Squamous Intraepithelial Neoplasia

2020 ◽  
Author(s):  
Keyword(s):  
Anal Canal ◽  
Intraepithelial Neoplasia ◽  
Low Grade ◽  
Squamous Intraepithelial Neoplasia

scholarly journals Novel Genital Alphapapillomaviruses in Baboons (Papio hamadryas Anubis) With Cervical Dysplasia

2012 ◽  
Vol 50 (1) ◽  
pp. 200-208 ◽  
Author(s):  
I. L. Bergin ◽  
J. D. Bell ◽  
Z. Chen ◽  
M. K. Zochowski ◽  
D. Chai ◽  
...  
Keyword(s):  
Cervical Dysplasia ◽  
Intraepithelial Neoplasia ◽  
Papio Hamadryas ◽  
Primate Species ◽  
Low Grade ◽  
Sexually Transmitted ◽  
Olive Baboons ◽  
Papio Hamadryas Anubis ◽  
Squamous Intraepithelial Neoplasia ◽  
Human Infections

Genital Alphapapillomavirus (αPV) infections are one of the most common sexually transmitted human infections worldwide. Women infected with the highly oncogenic genital human papillomavirus (HPV) types 16 and 18 are at high risk for development of cervical cancer. Related oncogenic αPVs exist in rhesus and cynomolgus macaques. Here the authors identified 3 novel genital αPV types (PhPV1, PhPV2, PhPV3) by PCR in cervical samples from 6 of 15 (40%) wild-caught female Kenyan olive baboons ( Papio hamadryas anubis). Eleven baboons had koilocytes in the cervix and vagina. Three baboons had dysplastic proliferative changes consistent with cervical squamous intraepithelial neoplasia (CIN). In 2 baboons with PCR-confirmed PhPV1, 1 had moderate (CIN2, n = 1) and 1 had low-grade (CIN1, n = 1) dysplasia. In 2 baboons with PCR-confirmed PhPV2, 1 had low-grade (CIN1, n = 1) dysplasia and the other had only koilocytes. Two baboons with PCR-confirmed PhPV3 had koilocytes only. PhPV1 and PhPV2 were closely related to oncogenic macaque and human αPVs. These findings suggest that αPV-infected baboons may be useful animal models for the pathogenesis, treatment, and prophylaxis of genital αPV neoplasia. Additionally, this discovery suggests that genital αPVs with oncogenic potential may infect a wider spectrum of non-human primate species than previously thought.

scholarly journals Prevalence of human papillomavirus genotypes and precancerous cervical lesions in a screening population in Beijing, China: Analysis of results from China’s Top 3 Hospital, 2009–2019

2020 ◽  
Author(s):  
Yidi Liu ◽  
Huan Wu ◽  
Jingjiang Xu ◽  
Defu Chen ◽  
Hongyou Zhao ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
Intraepithelial Neoplasia ◽  
Northern China ◽  
Pathological Diagnosis ◽  
Pathological Examination ◽  
Low Grade ◽  
Cervical Lesions ◽  
Hpv Genotyping ◽  
Squamous Intraepithelial Neoplasia ◽  
Hpv Genotypes

Abstract Background: Cervical cancer is the fourth most common cancer in women. Early detection and diagnosis play an important role in secondary prevention of cervical cancer. This study aims to provide more information to develop an effective strategy for the prevention and control of cervical cancer in northern China. Methods: A retrospective single-centre descriptive cross-sectional study was conducted in Chinese PLA General Hospital located in Beijing, covering the period from January 2009 to June 2019. The patients who underwent a polymerase chain reaction (PCR)-based HPV genotyping test and cervical pathological diagnosis were included. Furthermore, we limited the interval between the two examination within 180 days for the purpose of making sure their correlation to analyse their relationship. Moreover, the relationship between different cervical lesions and age as well as single/multiple HPV infection was assessed.Results: A total of 3,134 patients were eligible in this study after HPV genotyping test and pathological diagnosis. Most of the patients (95%) were from northern China. Among the patients, 1,745(55.68%） had high-grade squamous intraepithelial neoplasia (HSIL), 1,354 (43.20%) had low-grade squamous intraepithelial neoplasia (LSIL) and 35 (1.12%) were Normal. The mean age was 42.06 ± 10.82(range, 17–79 years). The women aged 35-49 years accounted for the highest incidence rate. The top five most commonly identified HPV genotypes in each lesion class were as follows: HPV16, 58, 52, 31 and 51 in the class of HSIL; HPV16, 52, 58, 56 and 51 in the class of LSIL; HPV16, 31, 6,11, 52 and 58 in the class of normal. The frequencies of HPV single genotype infection and multiple genotypes infection were 55.26% and 34.18%, respectively. There was no difference in the attributable proportions of multiple genotypes infection amongst HSIL, LSIL and Normal.Conclusions: In Northern China, HPV16 was the most dominant genotype in the patients with pathological examination. The peak age of the onset of HSIL was between 35 and 49 years of age. Infection with multiple HPV genotypes did not increase the risk of HSIL. Type-specific HPV prevalence and attribution proportion to cervical precancerous lesions should be taken into consideration in the development of vaccines and strategy for screening in this population.

scholarly journals Immunohistochemical expression of p16INK4A in the lesions of uterine cervix

2020 ◽  
Vol 7 (10) ◽  
pp. A502-508
Author(s):  
Niharika Rawat ◽  
Shivapriya Rajan
Keyword(s):  
Cervical Cancer ◽  
Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Intraepithelial Neoplasia ◽  
Low Grade ◽  
High Grade ◽  
Cervical Lesions ◽  
Cancer Management ◽  
Squamous Intraepithelial Neoplasia

Background: Cervical cancer is the major cause of cancer deaths among women. Globally, around 5,70,000 new cases of cervical cancer and 3,11,000 deaths occurred in the year 2018. In India, Cervical cancer is a leading cause of cancer related mortality among women and the number of deaths is 60,000 per year among 97,000 diagnosed patients, especially those from lower socioeconomic group. Human Papilloma Virus (HPV) plays a crucial role in causing cervical dysplasia. This is done by upregulating p16INK4A, a cyclin dependent kinase inhibitor through interaction with cellular regulatory proteins. Hence p16INK4A can be used as a biomarker, since it is directly related variable for the presence of HPV. This study was conducted to evaluate the expression of p16INK4A in benign, premalignant and malignant cervical lesions and to assess its utility in diagnosing and grading cervical lesions. Methods: A total of 80 cervical specimens categorized histopathologically into nonspecific cervicitis, low grade squamous intraepithelial neoplasia (LSIL), high grade squamous intraepithelial neoplasia (HSIL) and squamous cell carcinoma cervix were included in this prospective study of one-year duration. Immunohistochemical study of p16INK4A were interpreted qualitatively and semi-quantitatively by Allred scoring system (0 to 8 points) which measures the proportion of stained cells and intensity of staining of cells. The collected data were statistically analyzed by ANOVA and chi square test. Result: Qualitative method showed absence of p16INK4A expression in all nonspecific cervicitis. 16.7% (2/12) LSIL, 100% (12/12) HSIL and 100% (28/28) squamous cell carcinoma cases showed p16INK4A positivity. Allred scoring of p16INK4A showed 66% (8/12) HSIL and 85.7% (24/28) squamous cell carcinoma cases with score 3 positivity. Hence high-grade lesions showed higher expression of this marker. Conclusion: IHC expression of p16INK4A showed increasing degree of expression from benign to premalignant and malignant lesions suggesting its diagnostic and prognostic value in the cervical cancer management

Primary Cervical Cancer Screening and Triage Using an mRNA Human Papillomavirus Assay and Visual Inspection

2013 ◽  
Vol 23 (3) ◽  
pp. 513-518 ◽  
Author(s):  
Lucybeth Nieves ◽  
Christine L. Enerson ◽  
Suzanne Belinson ◽  
Jennifer Brainard ◽  
Andres Chiesa-Vottero ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
Human Papillomavirus ◽  
Cancer Screening ◽  
Cervical Cancer Screening ◽  
Visual Inspection ◽  
Screening Program ◽  
High Sensitivity ◽  
Intraepithelial Neoplasia ◽  
Low Grade ◽  
Squamous Intraepithelial Neoplasia

ObjectiveMexican Cervical Cancer Screening Study II (MECCS II) seeks to develop a highly sensitive and highly specific screening program able to be adapted to all socioeconomic levels in Mexico. The objectives of MECCS II are (1) to compare the sensitivity and specificity for cervical intraepithelial neoplasia (CIN) 3 or cancer of self-collected vaginal specimens tested for high-risk types of the human papillomavirus (HR-HPV) by APTIMA with those tested for HR-HPV by Hybrid Capture 2 (HC2); and (2) determine the efficacy of cryotherapy in the treatment of HR-HPV–positive and acetic acid–aided visual inspection (VIA)–positive and -negative women after VIA triage.MethodsThe study was conducted in rural Mexico. Women aged 30 to 50 years, nonpregnant, with no history of hysterectomy or pelvic irradiation and varied histories of screening, participated. A direct endocervical sample was tested for cytology, HC2, and APTIMA assay (AHPV). Subjects positive on any test were recalled for triage VIA, biopsies, and immediate cryotherapy. Tests were compared using McNemar test.ResultsTwo thousand forty-nine patients have complete results. Mean age of the patients was 39.2 years; 7.7% presented with ≥atypical squamous cells of uncertain significance (ASCUS), 1.8% ≥low-grade squamous intraepithelial neoplasia, and 0.5% ≥high-grade squamous intraepithelial neoplasia. Two percent of patients had ≥CIN2, and 0.78% had ≥CIN3 (including 2 with invasive disease). The sensitivity of ThinPrep (>ASCUS), HC2, and AHPV for >CIN3 for direct endocervical collection was 87.5%, 100%, and 100%, respectively. The specificity of ThinPrep (>ASCUS), HC2, and AHPV for >CIN3 was 94.1%, 92.2%, and 93.5%, respectively. Specificities of HC2 and AHPV differed significantly. The overall percentage of agreement among HPV assays (HC2 vs APTIMA) is 97%. Four hundred sixty-nine women returned for VIA. Two hundred ninety-one women were treated with cryotherapy.ConclusionsThe specificity of the APTIMA assay along with high sensitivity is an advantage for primary screening. Follow-up evaluation will be important to determine the true impact of potential undertreatment in the screening algorithm. Self-sampling applications are explored.

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