Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Changing Mole?

“Any single nevus that is noted to change independently should be cause for alarm.” Rhodes AR. Neoplasms: benign neoplasias, hyperplasias, and dysplasias of melanocytes. In: Fitzpatrick TB, Eisen AZ, Wolff K, et al., eds., Dermatology…

Dermatology Practical & Conceptual

Balloon cell melanoma in primary care practice: a case report

Abstract A case of balloon cell melanoma encountered in a primary care skin cancer practice in Melbourne, Australia is presented. The presenting lesion was 6 mm in diameter, ulcerated, non-pigmented and without any algorithmic clues to melanoma. How…

Clinical Case Studies

Nevus of Ota

INITIAL PRESENTATION A 32-year-old Asian man presented with a long-standing patch of gray-brown discoloration under his left eye. (Figure 1) He noted an increasing prominence of the pigmentation over the preceding 15 years. The patient had a history…

Histologic Diagnosis of Inflammatory Skin Diseases

Post-inflammatory pigmentary alteration

Post-inflammatory pigmentary alteration Synonyms Postinflammatory pigmentary change Presentation stereotypical Age and sex No preference for age or sex, more prominent in dark-skinned individuals Distribution of lesions Sites of a previous dermatiti…

Differential Diagnosis in Dermatopathology

Pagetoid Bowen’s disease vs. Extramammary Paget’s disease

Pigmented macules and patches mostly in the middle third of the face, vertically and horizontally, distributed symmetrically and occurring mainly in postpubescent women as a consequence of the combined effects of estrogen and ultraviolet light on me…

Differential Diagnosis in Dermatopathology

Dermatofibroma vs. Dermatofibrosarcoma protuberans

Pigmented macules and patches mostly in the middle third of the face, vertically and horizontally, distributed symmetrically and occurring mainly in postpubescent women as a consequence of the combined effects of estrogen and ultraviolet light on me…