Differential Diagnosis in Dermatopathology

Lichen simplex chronicus vs. Hypertrophic lichen planus

Hamartomas (“congenital” melanocytic nevi) and benign neoplasms (“acquired” melanocytic nevi) of various specific types, all of which are composed of abnormal melanocytes and manifested clinically as lesions of different colo…

Differential Diagnosis in Dermatopathology

Video Library

A vehicle to instructing profoundly about rudiments and subtleties of surgery of the skin. Read Introduction The series of videos about surgery of the skin is intended to be useful to all those engaged in that practice, whether a dermatologist, a…

Differential Diagnosis in Dermatopathology

Discussions

Trichoadenoma and microcystic adnexal carcinoma at times resemble each other sufficiently to pose a dilemma diagnostic, even though the former is a hamartoma and the latter an adenocarcinoma. Both may have several findings histopathologic in common:…

Differential Diagnosis in Dermatopathology

Discussions

The small nodular types of trichoblastoma and of basal-cell carcinoma have many attributes histopathologic in common. For example, both are made up of nodules of follicular germinative cells, i.e., neoplastic trichoblasts, nodules are mostly small a…

Differential Diagnosis in Dermatopathology

Trichoadenoma vs. Microcystic adnexal carcinoma

Hamartomas (“congenital” melanocytic nevi) and benign neoplasms (“acquired” melanocytic nevi) of various specific types, all of which are composed of abnormal melanocytes and manifested clinically as lesions of different colo…

Differential Diagnosis in Dermatopathology

Discussions

Lichen simplex chronicus and hypertrophic lichen planus are both responses to persistent, vigorous rubbing. In fact, lichen simplex chronicus results entirely from rubbing what at first was normal skin, in contrast to hypertrophic lichen planus whic…