Search Results for: isthmic-catagen cyst

Differential Diagnosis in Dermatopathology

Discussions

…holytic dyskeratotic acanthoma), and an uncommon infundibular cyst (warty dyskeratoma). Those findings histopathologic occur also as an incidental change confined to a single rete ridge or even an infundibulum of a biopsy specimen that was taken for…

Differential Diagnosis in Dermatopathology

Discussions

…icians 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 introduced into the upper part of the neoplasm as it appears in…

Histologic Diagnosis of Inflammatory Skin Diseases

Lymphocytoma cutis

…gstanding 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 designation, “lymphocytoma cutis,” and synonyms for it, la…

Differential Diagnosis in Dermatopathology

Discussions

…dular, morpheiform, fibroepithelial tumorous, and infundibulo-cystic. Trichoepitheliomas and nodular basal-cell carcinomas are epithelial neoplasms with the following changes histopathologic in common: Dome-shape Aggregates of neoplastic trichoblasts…

Dermatology Practical & Conceptual

Yellow color upon dermatoscopy does not exclude melanoma!

…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 vessels. However, at the base and the periphery of the nodule, a…

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 lesio…

Differential Diagnosis in Dermatopathology

Discussions

…rating one, but also consequent to rupture of an infundibular cyst. It evolves through stages of granulation tissue accompanied by countless extravasated erythrocytes, granulomatous inflammation, and fibrosis. At its zenith clinically, it is a papule…

Differential Diagnosis in Dermatopathology

Trichoepithelioma vs. Infundibulocystic basal-cell carcinoma

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 lesio…