Differential Diagnosis in Dermatopathology

Discussions

Both nodular fasciitis and malignant fibrous histiocytoma are comprised of oval and spindle cells, some of which are arranged in fascicles that appear to be intertwined and may involve the lower part of the dermis, subcutaneous fat, fascia, and skel…

Differential Diagnosis in Dermatopathology

Nodular fasciitis vs. Malignant fibrous histiocytoma

A keratotic condition of the palms and soles, inherited usually, but sometimes acquired, in which involvement may be diffuse, circumscribed (including striate), or punctate….

Differential Diagnosis in Dermatopathology

Discussions

Lichen sclerosus et atrophicus, which is the superficial manifestation of morphea, and chronic radiation dermatitis are both fibrosing dermatitides that may resemble each other closely when viewed through the scanning objective of a conventional mic…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Psoriasis on volar skin Dyshidrotic dermatitis 1. Rete ridges of approximately equal length and breadth 1. Rete ridges of unequal length and breadth 2. No pure spongiotic vesicles, i.e., ones devoid of neutrophils 2. Pure spongiotic vesicles o…

Differential Diagnosis in Dermatopathology

Discussions

Spongiotic dermatitis with discrete collections of cells in the epidermis and mycosis fungoides with discrete collections of cells in the epidermis (Pautrier’s “microabscesses”) share some findings histopathologic, including the pr…