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Make the Diagnosis: A Blue-Black Facial Nodule -- What's Your Best Guess?

MedpageToday

Presentation

A 64-year-old postal worker visited his doctor about a lesion that he first noticed on his face 2 months prior. On examination, a shiny, eroded, blue-black nodule was seen on his right cheek. Histopathology examination showed aggregates of melanin and melanocytes within sheets of basaloid keratinocytes with peripheral palisading and surrounding clefts within a fibromyxoid stroma containing melanophages.


to use the Differential Builder in VisualDx to help you.

13% a) Blue nevus

16% b) Cutaneous squamous cell carcinoma

43% c) Pigmented basal cell carcinoma

1% d) Superficial basal cell carcinoma

Learnings

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