1 2 3 12
A Clinical Atlas of 101 Common Skin Diseases

Cysts and Cystic Hamartomas

Papules, nodules, and tumors that, on gross examination, are usually skin colored and, on histopathologic examination, consist of an epithelium-lined sac that contains fluid, cells, or both in the case of true cysts and of cysts that are associated…

Therapeutic Strategies in Dermatology

Pemphigus Foliaceus, Pemphigus Erythematosus: Overview

Overview Pemphigus foliaceus is a relatively benign autoimmune bullous disease associated with the deposition of intercellular antibodies directed against desmoglien 1. The therapeutic approach differs significantly from that for pemphigus vulgaris;…

Therapeutic Strategies in Dermatology

Pyoderma Gangrenosum: Key Points

Key Points Pyoderma gangrenosum is a type of ulcerating neutrophilic dermatosis. The classic morphology of pyoderma gangrenosum is an ulcer with a violaceous rim and undermined border. PG lesions may develop very rapidly (in days) and may be trigg…

Therapeutic Strategies in Dermatology

Erythema Multiforme: Key Points

Key Points Erythema multiforme (EM) is a clinical syndrome marked by either target lesions and/or mucosal erosions. It may be idiopathic or seen in association with infections or medications. EM has been reported in association with herpes simplex…

Histologic Diagnosis of Inflammatory Skin Diseases

Lichen planus-like keratosis

Lichen planus-like keratosis Presentation stereotypical Age and sex Older individuals bombarded by rays of the sun for many years Distribution of lesions Sun-exposed sites, especially the chest and shoulders Configuration of lesions Round Individual…

Differential Diagnosis in Dermatopathology

Lupus erythematosus profundus vs. Panniculitis-like T-cell lymphoma

Papules, nodules, and tumors that, on gross examination, are usually skin colored and, on histopathologic examination, consist of an epithelium-lined sac that contains fluid, cells, or both in the case of true cysts and of cysts that are associated…

Differential Diagnosis in Dermatopathology

Lichen planus vs. Lichen planus-like keratosis

Papules, nodules, and tumors that, on gross examination, are usually skin colored and, on histopathologic examination, consist of an epithelium-lined sac that contains fluid, cells, or both in the case of true cysts and of cysts that are associated…

1 2 3 12