Periacinar Clefting and p63 Immunostaining in Prostatic Intraepithelial Neoplasia and Prostatic Carcinoma.

The aim of the present study was to correlate the presence and extent of retraction clefting and the expression of p63 in neoplastic glands and glands with prostatic intraepithelial neoplasia (PIN) in needle core biopsies. We analyzed needle core biopsies from 28 patients with PIN and 41 patients with adenocarcinoma. Neoplastic glands and those with PIN were analyzed on high power field (400x) and classified in three groups according to the extent of clefting.

Superficial (early) endocervical adenocarcinoma in situ: a study of 12 cases and comparison to conventional AIS.

Although established histologic criteria for the diagnosis of endocervical adenocarcinoma in situ (AIS) have been published, some lesions are not readily classified or present with more subtle degrees of epithelial atypia. Lesions confined to the surface mucosa may be particularly challenging, possibly because they represent early disease. Twelve cases of superficial AIS (SAIS) confined to the surface mucosa or crypt openings culled from the in-house and consultation practices were examined histologically, immunostained for MIB-1 and p16, and analyzed (when possible) for HPV nucleic acids by DNA-DNA in situ hybridization (INFORM).

Type-specific HPV testing as a predictor of high-grade squamous intraepithelial lesion outcome after cytologic abnormalities.

Objective: Human papillomavirus (HPV) risk assignment influences management after a cytologic diagnosis of atypical squamous cells of undetermined significance (ASCUS) or low-grade squamous intraepithelial lesion (LSIL). This study addressed whether type-specific HPV testing predicts risk of biopsy outcome of high-grade cervical intraepithelial neoplasia (CIN 2,3).

Materials And Methods: A total of 162 ASCUS or LSIL diagnoses with colposcopic follow-up were evaluated and placed in 3 groups: Analysis 1: (high-risk HPVs including types 53 and 66; Analysis 2 (high-risk HPVs excluding types 53 and 66); and Analysis 3 (high-risk HPVs including type 53 and excluding type 66).

Microglandular hyperplasia: a model for the de novo emergence and evolution of endocervical reserve cells.

Background: Microglandular hyperplasia (MGH) of the cervix in human beings is associated early with gland proliferation and terminates in mature squamous metaplasia. Using antibodies to basal cell markers, we analyzed biopsies with MGH to profile the distribution and evolution of reserve cells and their relationship to these epithelial components.

Design: Serial sections of 24 MGHs were subdivided into (1) early MGH with microacinar proliferation, abundant subnuclear vacuoles, and a paucity of supporting stroma and (2) late MGH with more prominent supporting stroma and/or squamous metaplasia.

p16INK4A expression as biomarker for HPV 16-related vulvar neoplasias.

Up-regulation of p16INK4A is associated with high-risk human papillomavirus (HPV) in preinvasive and invasive cervical neoplasia. However, its expression in vulvar carcinomas, which have a diverse pathogenesis, has not been extensively studied. One hundred seventy-seven vulvar intraepithelial neoplasms (VIN), squamous cell carcinomas (SCC), and benign squamous epithelia were analyzed for p16 expression.