Differential Diagnosis in Dermatopathology

Urticarial reaction to an arthropod assault vs. Urtica

An inflammatory process caused by superficial fungi, i.e., fungi situated superficially in the cornified layer and in other cornified structures, and expressed clinically as smooth-surfaced papules, scaly papules, scaly plaques, nodules, pustules, v…

Histologic Diagnosis of Inflammatory Skin Diseases

Granuloma annulare

…en or young adults as deep-situated nodules, especially on the hands and buttocks, and in the pretibial region. Perforating granuloma annulare presents itself usually on the dorsa of hands as tiny umbilicated papules topped by crusts. Widespread gran…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

Images 10.58.1A: Perivascular and interstitial dermatitis + 10.58.1B: Neutrophils and copious quantities of nuclear “dust” of neutrophils in association with many extravasated erythrocytes = Leukocytoclastic vasculitis, early…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Myxoma?

“myxoma (milk – s ? m?) [myxo – + G. -oma, tumor]. A benign neoplasm derived from connective tissue, consisting chiefly of polyhedral and stellate cells that are loosely embedded in a soft mucoid matrix, thereby resembling primiti…

Dermatology Practical & Conceptual

Melanoma arising in a giant nevus spilus maculosus

Abstract Melanoma arising in a nevus spilus is rare. There are two distinct types of nevus spilus characterized by macular or papular speckles, respectively. We report the case of a melanoma that arose in association with a giant nevus spilus maculo…

Dermatology Practical & Conceptual

Letter to the Editor

In reply to “To count or not to count-that is the question” Dear Editor, I would like to comment on the editorial by Almut BÖer-Auer entitled, “To count or not to count-that is the question!” [1] and the subsequent survey abo…

Dermatology Practical & Conceptual

Protecting the patient is our protection

Optimization and securing of medical practices and procedures has always been very challenging in medicine. However, the real-life clinical settings continue to pose various hazards that may lead medical professionals to unintended mistakes. Patholo…