Update in Diagnosis and Management of Primary Cutaneous B-Cell Lymphomas.

Primary cutaneous lymphomas are a rare group of diseases, with an estimated incidence of 0.5-1 case per 100,000 people per year. Primary cutaneous B-cell lymphomas (pCBCLs) represent 25-30% of all primary cutaneous lymphomas.

Rosacea Granulomatosis in a Neutropenic Leukemic Patient.

Rosacea granulomatosis is a common, chronic skin disorder that primarily affects the central face, namely the cheek, nose, chin, and central forehead. Although rosacea is mainly a disorder of innate and adaptive immunity, a variety of endogenous and exogenous triggers such as may stimulate it. Often found as commensal organisms in human skin, ​​​​​​​can be parasitic if there is a change in the host's cutaneous environment.

Defining the Histopathological Term Atypical Intraepidermal Melanocytic Proliferation: A Retrospective Cross-Sectional Study.

Background: Atypical intraepidermal melanocytic proliferation (AIMP) is a general term assigned to melanocytic proliferations of uncertain biological potential when a definitive histopathological diagnosis cannot be achieved. There are few data available describing the possibility of malignancy of AIMP, or ways to further define diagnosis.

Objective: To determine the rate of diagnostic change of AIMP to melanoma or melanoma in situ (MIS) after conventional excision.

Pigmented Lesions of the Nail Unit.

Pigmented lesions of the nail unit are commonly encountered in the clinical setting. Yet, they often present a unique challenge to clinicians because of a broad differential diagnosis or unfamiliarity with clinical and histopathologic features. A wide variety of causes exist ranging from benign lesions such as subungual hemorrhage to malignant lesions such as subungual melanoma.