Search Results for: isthmic-catagen cyst

Histologic Diagnosis of Inflammatory Skin Diseases

Darier’s disease and simulators of it

…e related than are acantholytic dyskeratotic acanthoma and Darier’s disease. Warty dyskeratoma, a type of infundibular cyst whose lining is characterized by changes throughout its circumference of acantholytic dyskeratosis, initially was…

Differential Diagnosis in Dermatopathology

Discussions

…tes it, but in some epidermal nevi, a solitary keratosis (acantholytic dyskeratotic acanthoma), and an uncommon infundibular cyst (warty dyskeratoma). Those findings histopathologic occur also as an incidental change confined to a single rete ridge…

Differential Diagnosis in Dermatopathology

Discussions

…mors that have no distinguishing features. Not uncommonly, clinicians misinterpret both apocrine and eccrine mixed tumors as cysts and incise the lesions rather than attempt to excise them, a maneuver that often results in an artifactual cleft being…

Histologic Diagnosis of Inflammatory Skin Diseases

Lymphocytoma cutis

…1; or “lymphocytoma cutis” probably represent a longstanding inflammatory response to rupture of an infundibular cyst. Dilantin may induce changes in the skin that vaguely resemble those of a lymphoma, but that happens rarely. The…

Differential Diagnosis in Dermatopathology

Discussions

…as, inheritance is by way of an autosomal dominant trait. Solitary trichoepithelioma is not inherited. Epithelioma adenoides cysticum is another, older, and antiquated appellation for numerous trichoepitheliomas. An interesting association of benign…

Yellow color upon dermatoscopy does not exclude melanoma!

Yellow color upon dermatoscopy does not exclude melanoma!

…re 1A). The nodule was firm on palpation. Based on the clinical appearance, the differential diagnosis included an epidermal cyst or a sebaceous tumor. The dermatoscopic examination revealed mainly structureless yellow to pink areas and some dotted…

Differential Diagnosis in Dermatopathology

Apocrine mixed tumor vs. Eccrine mixed tumor

A hamartoma of epidermis, epithelial structures of adnexa, and presumably dermal elements, typified, when fully formed, by a papillated or verrucous yellowish plaque situated usually on the scalp. The condition may present itself as a solitary…

Differential Diagnosis in Dermatopathology

Discussions

…ammatory process that arises secondary to injury, often a penetrating one, but also consequent to rupture of an infundibular cyst. It evolves through stages of granulation tissue accompanied by countless extravasated erythrocytes, granulomatous…