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…

Differential Diagnosis in Dermatopathology

Lichen simplex chronicus vs. Hypertrophic lichen planus

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…

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…

Histologic Diagnosis of Inflammatory Skin Diseases

Lymphadenosis benigna cutis

Lymphadenosis benigna cutis Synonyms Borrelial pseudolymphoma Presentation stereotypical Age and sex Any age and either sex Distribution of lesions Localized usually to an ear lobe, the nose, a nipple or areola, or the scrotum; lesions on the ear ar…

Differential Diagnosis in Dermatopathology

Discussions

Pruritic urticarial papules and plaques of pregnancy (PUPPP) and a superficial response to an assault by an arthropod are inflammatory diseases that share many features clinical and findings histopathologic. When viewed through a conventional micros…