Neuroectodermal influence in odontogenic cyst and tumor: evidence through CD56 immunoexpression.

Background And Objectives: CD56, associated with neuroectodermal differentiation of the embryonal cells, is often considered a marker of neural lineage. Odontogenic keratocysts (OKCs) are of particular interest because of their characteristic histopathologic features, high recurrence rate, and aggressive behavior. CD56 immunoreactivity in these lesions has been reported with very high frequency.

Histopathological prognosticators and their clinicopathological correlation in oral squamous cell carcinomas of the tongue.

Background: Tongue carcinomas account for 25%-40% of intraoral squamous cell carcinomas (OSCCs). Although TNM staging systems is an international standard for cancer reporting, prognosis evaluation, and treatment planning, multiple histopathological risk assessment predictors such as tumor thickness (TT), tumor shape, tumor growth pattern, and invasive malignancy grading scoring systems have been studied and should form a basis for prediction and prognostication of such aggressive carcinomas.

Aim: To evaluate and characterize the histomorphological prognostic indicators in OSCCs of tongue and compare it with OSCCs of other anatomic sites within the oral cavity.