A Fishy Tale of Skin Nodules

A 63-year-old woman develops persistent skin nodules on her arms. A biopsy reveals granulomas. Explore the Differential Diagnosis for this unusual presentation.

Mycobacterium marinum


A 63-year-old woman presented with an 8-week history of nodules on her arms. A biopsy was performed and demonstrated multiple granulomas. What is the diagnosis?

What is the most likely diagnosis?

Squamous-cell carcinoma
Mycobacterium marinum
Syphilis
Sarcoidosis
Herpes simplex virus infection

Atypical Mycobacteria, Dermatology, Fish Tank Granuloma, Granuloma, Mycobacterium marinum

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