Differential Diagnosis in Dermatopathology

Discussions

Both sebaceous hyperplasia and nevus sebaceus of Jadassohn consist of abnormalities of sebaceous glands but the former, as the name denotes, is a hyperplasia, whereas the latter is a hamartoma that involves not only sebaceous units, but other adnexa…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Chondrodermatitis Nodularis Helicis?

“At the dermatology meeting in Berlin, Jadassohn also indicated that changes in the cartilage can often be established clinically, especially the knobby sites on the helix that show a whitish transparence through a thinned epidermis. My expe…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Halo Phenomenon?

“This study supports the concept that the halo nevus should not be regarded as a single clinicopathological entity, but rather that the halo phenomenon occurs in a wide spectrum of nevus types exhibiting a wide spectrum of histological atypia…

Histologic Diagnosis of Inflammatory Skin Diseases

Lichen striatus

s of lymphocytes on them. Bibliography Bibliography for lichen striatus Alexander A. Die lineare Neurodermatitis. In: Jadassohn J, ed. Handbuch der Haut- und Geschlechtskrankheiten. Berlin: Springer, 1927;6:402. Balzer F, Mercier R. Trophonéurose lic…

Histologic Diagnosis of Inflammatory Skin Diseases

Lymphocytoma cutis

…Dermatol 1980;116:1142–46. Fendt H. Beiträge zur Kenntnis der sogenannten sarcoiden Geschwülste der Haut. Arch Dermatol Syphilol 1900;53:213. Hirsch P, Lukes R. Reactive pseudolymphoma, nodular type. Arch Dermatol 1965;91:408. Jadassohn J. Vorstellu…

Histologic Diagnosis of Inflammatory Skin Diseases

Irritant contact dermatitis/Phototoxic dermatitis

Irritant contact dermatitis/Phototoxic dermatitis Synonyms Acute nonallergic contact dermatitis Primary irritant dermatitis External toxidermas Irritant dermatitis Presentation stereotypical Age and sex Any age, both sexes Distribution of lesions Ex…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Sebaceous hyperplasia Nevus sebaceus of Jadassohn 1. Dome-shaped papule with a central cell 1. Relatively flat-topped plaque in early stage; papillated or digitated plaque in fully developed and later stages; no dell 2. Basket-woven pattern of…

Histologic Diagnosis of Inflammatory Skin Diseases

Erythema annulare centrifugum

Erythema annulare centrifugum Synonyms Erythema perstans Erythema gyratum perstans Erythema figuratum perstans Presentation stereotypical Age and sex Middle-aged or older adults of both sexes; children sometimes Distribution of lesions Any part of t…