Cases of Interest
A 49-year-old male had an injury 2 decades ago and recently developed nodular swelling of the distal index finger (Fig. 1). Procedure: Left index finger debridement. The resultant pink-tan 17 x 14 x 11-mm specimen was mottled by white chalky deposits. Microscopically, multinucleated giant cells contained pale yellow-green translucent material that was weakly birefringent (Fig. 2). Mononuclear histiocytes contained finely particulate material that appeared jet black under conventional transillumination (Fig 3).
Your diagnosis is:
- Gout
- Calcium pyrophosphate deposition disease
- Paint
- Pigmented giant cell tumor of tendon sheath
- Metastatic melanoma
An otherwise healthy 33-year-old woman gave a 6-week history of a left superolateral orbital mild tenderness, ptosis, proptosis, and diplopia on upgaze. MRI shows a superolateral orbital mass (Figs. 1 & 2). A biopsy was performed (Fig. 3).
This is:
- Spiradenoma
- Spiradenocarcinoma
- Spiradenocylindrocarcinoma
- Adenoid cystic carcinoma of the lacrimal gland
- Eccrine carcinoma
- Glandular schwannoma
- Metastatic carcinoma