BACKGROUND Grading of dysplasia, including head and neck lesions, continues to be a hotly debated subject. It is subjective and lacks intra- and inter-observer reproducibility due to the insufficiency of validated morphological criteria and the biological nature of dysplasia. Moreover, due to the absence of a consensus, several systems are currently employed. OBJECTIVES The aims of this revie...

Esophageal cancer is the sixth most common cause of cancer death in the world [1]. Over 80% of esophageal cancers occur in developing countries [1], and in these areas, 90% of these cancers are esophageal squamous cell carcinoma (ESCC) [2]. The precursor lesion of ESCC is squamous intraepithelial neoplasia (squamous dysplasia), defined histologically as nuclear atypia (enlargement, pleomorphism...

It was in 1987 that McNeal and Bostwick first described intraductal dysplasia during a whole-mount pathologic investigation of 100 prostates without cancer and 100 with cancer that were diagnosed in the pre–prostate-specific antigen era. They found foci of dysplasia in 82% of the prostates harboring cancer compared with 43% in those without cancer. Interestingly, both the grade and volume of dy...

To evaluate the effect of potential risk factors, especially human papillomavirus type 16 (HPV-16) infection and nutritional status on the course of cervical dysplasia, we analyzed data from an intervention trial conducted from 1985 to 1990, in Birmingham, Alabama. With the use of data of four repeated evaluations of dysplasia at an interval of 2 months, specific relationships between HPV-16 in...

Background & Objectives: Pterygium is a fibrovascular degeneration of the conjunctiva. Ocular surface squamous neoplasia encompasses wide spectrum dysplastic changes including corneal and conjunctival intraepithelial cell carcinoma. They both share common risk factors can coexist concomitantly. This study aims to determine association between OSSN pterygium which will help improve management pt...

BACKGROUND p16 (INK4a) (p16) is a well-recognized surrogate molecular marker for human papilloma virus (HPV) related squamous dysplasia. Our hypothesis is that the invasive interventions and related morbidities could be avoided by objective stratification of positive cytologic interpretations by p16 immunostaining of cell block sections of cytology specimens. MATERIALS AND METHODS Nuclear imm...

Intraepithelial neoplasia is of critical importance to the cancer chemoprevention field because it is a target condition for which drugs must be sought that will prevent its development or stop its progression. The term "dysplasia" refers to the morphological alterations that characterize intraepithelial neoplasia and according to many authors consists of seven basic morphological changes that ...

The aim of this study was to investigate fascin and podoplanin expression in oral dysplasia and carcinoma in situ (CIS) immunohistochemically, and to evaluate their relationship to histopathological diagnosis based on architectural and cytological features. Fascin and podoplanin expression patterns were analyzed immunohistologically in 26 specimens of oral lesions, including benign disease (hyp...

According to the 2010 WHO classification of digestive system tumors, esophageal low‐grade intraepithelial neoplasia (LGIEN) is associated with ultrastructural and cytological abnormalities confined to the lower half of the epithelium, and squamous cell carcinoma (SCC) is defined as tumor invasion of the lamina propria or penetration into deeper tissue layers. We here reported a rare esophageal ...