Human papillomavirus DNA prevalence and type distribution in anal carcinomas worldwide.

Knowledge about human papillomaviruses (HPV) types involved in anal cancers in some world regions is scanty. Here, we describe the HPV DNA prevalence and type distribution in a series of invasive anal cancers and anal intraepithelial neoplasias (AIN) grades 2/3 from 24 countries. We analyzed 43 AIN 2/3 cases and 496 anal cancers diagnosed from 1986 to 2011.

HPV prevalence and genotypes in different histological subtypes of cervical adenocarcinoma, a worldwide analysis of 760 cases.

The goal of our study was to provide comprehensive data on the worldwide human papillomavirus (HPV) genotype distribution in patients with invasive cervical adenocarcinoma in correlation with histologic tumor subtypes, geographical location, patients' age, and duration of sample storage. Paraffin-embedded samples of 760 cervical adenocarcinoma cases were collected worldwide. A three-level pathology review of cases was performed to obtain consensus histologic diagnoses and 682 cases were determined to be eligible for further analysis.

Evaluation of p16(INK4a) overexpression in a large series of cervical carcinomas: concordance with SPF10-LiPA25 PCR.

The aims of this study were to assess the overexpression of p16 in formalin-fixed paraffin-embedded cervical carcinoma tissue blocks and to determine its concordance with the human papillomavirus (HPV) status using the SPF10-LiPA25 polymerase chain reaction System and its correlation with the histologic type of invasive cervical cancer (ICC) and individual HPV genotypes. A total of 205 retrospectively collected ICC cases were analyzed by p16 immunohistochemistry. HPV detection was performed by polymerase chain reaction using SPF10 broad-spectrum primers, followed by deoxyribonucleic acid enzyme immunoassay and genotyping by reverse hybridization line probe assay (LiPA25).

Basaloid squamous cell carcinoma of the penis with papillary features: a clinicopathologic study of 12 cases.

There are 3 distinct variants of penile squamous cell carcinoma frequently associated with human papillomavirus (HPV): basaloid, warty-basaloid, and warty carcinomas. Considering the high incidence rates of penile cancer in some countries, a large international study was designed to evaluate the presence of HPV, its genotype distribution, and its association with histologic types of penile cancer. In this international review of >900 cases, we found a group of highly distinct papillary neoplasms composed of basophilic cells resembling urothelial tumors but frequently associated with HPV.

Human papillomavirus genotype distribution in cervical cancer cases in Spain. Implications for prevention.

Objective: Human papillomavirus (HPV) genotype distribution in invasive cervical cancer (ICC) is critical to guide the introduction and to assess the impact of HPV prophylactic vaccines. This study aims to provide specific information for Spain.

Methods: 1043 histological confirmed ICC cases diagnosed from 1940 to 2007 from six Spanish regions were assembled.

Value of p16(INK)⁴(a) in the pathology of invasive penile squamous cell carcinomas: A report of 202 cases.

Background: One third to one half of penile squamous cell carcinomas (SCCs) are related to human papillomavirus (HPV) infection. Viral detection is usually carried out by polymerase chain reaction (PCR) or other molecular methods. In this study, we evaluated p16(INK)⁴(a) immunohistochemical expression, which is simpler and less costly, as a potential marker of high-risk HPV (HR-HPV) infection in penile SCC.

Prevalence and risk factors of sexually transmitted infections and cervical neoplasia in women from a rural area of southern Mozambique.

There is limited information on the prevalence of sexually transmitted infections and the prevalence of cervical neoplasia in rural sub-Saharan Africa. This study describes the prevalence and the etiology of STIs and the prevalence of cervical neoplasia among women in southern Mozambique. An age-stratified cross-sectional study was performed where 262 women aged 14 to 61 years were recruited at the antenatal clinic (59%), the family-planning clinic (7%), and from the community (34%).

The basaloid cell is the best tissue marker for human papillomavirus in invasive penile squamous cell carcinoma: a study of 202 cases from Paraguay.

Human papillomavirus (HPV) has been reported in 12-82% of penile squamous cell carcinomas (SCC). There is an association of the virus with basaloid and warty carcinomas but the reported prevalence is variable. The causes of these variations are not clear.

Human papillomavirus types in invasive cervical cancer specimens from Turkey.

The main aim of the study is to describe the human papillomavirus (HPV) type-specific distribution in invasive cervical cancer (ICC) specimens from Turkey. Paraffin-embedded ICC specimens were identified from the histopathologic archives of the Hacettepe University Medical School in Turkey. HPV detection was carried out through amplification of HPV DNA by a SPF-10 broad-spectrum primer polymerase chain reaction and subsequently followed by DNA enzyme immunoassay and genotyping by LiPA25 (version 1).

Human Papillomavirus type distribution in invasive cervical cancer in Uganda.

Background: We conducted a study aiming to describe Human Papillomavirus (HPV) type distribution in invasive cervical carcinoma in Uganda.

Methods: 191 archival cervical carcinoma samples diagnosed in the Department of Pathology, Makerere University in Kampala between 1968 and 1992 were analysed using a sensitive PCR-Reverse Hybridization Line Probe Assay.

Results: Out of the 186 cases of confirmed invasive cervical cancer in the study paraffin blocks, 114 were positive for HPV DNA.

Vaccine-related HPV genotypes in women with and without cervical cancer in Mozambique: burden and potential for prevention.

Knowledge about the burden of Human Papillomavirus (HPV) infections in Sub-Saharan Africa is very limited. We collected cervical samples from 262 women from the general population and 241 tumor samples from women with invasive cervical cancer in Mozambique and tested them for HPV genotyping by the SPF(10)-LiPA(25) PCR system. Among the 195 women without cervical abnormalities by cytology HPV prevalence was 75.

p16 overexpression identifies HPV-positive vulvar squamous cell carcinomas.

Two types of vulvar squamous cell carcinomas (VSCCs) are recognized according to their relationship to human papillomavirus (HPV). Basaloid or warty carcinomas are considered HPV-associated tumors, whereas differentiated keratinizing neoplasms are considered non-HPV-associated. Recently, immunohistochemical detection of p16 and p53 has been proposed to differentiate these 2 types of VSCCs.