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11b - Answer: 59-year-old male is being evaluated for glomus tumor, right thumb mass

Pomeranz, Stephen
Stephen J Pomeranz, MD
Chief Medical Officer, ProScan Imaging. Founder, MRI Online
Includes DICOM files

HISTORY: 

This 59-year-old male is being evaluated for glomus tumor, right thumb mass. Pain under the nail. Had excision one year prior with nail regrowth, ridge which is red and painful.

(QUIZ ANSWER) PRIMARY FINDING IN THIS CASE: 

Glomus tumor.

Using the diagnostic web viewer, we have provided images that assist in telling our clinical story. Areas of significance are indicated below.

FINDINGS:

Lobulated region of T2 hyperintensity within the nail bed of the thumb measures 7 x 4 x 7.5mm. Signal characteristics and location are consistent with a glomus tumor. 

No fracture is demonstrated. Mild degeneration at the interphalangeal joint is demonstrated. Flexor and extensor tendons are intact. Mild degeneration involves the MCP joint of the thumb. 2nd MCP joint degeneration is also noted. 

CONCLUSION: 

Glomus tumor measures 7 x 4 x 7.5mm within the nail bed of the thumb. Tumor is located within the central aspect of the nail bed.

LESSON 2, TOPIC 33

Case Challenge: Thumb & Finger MRI Cases

Case Challenge

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Content reviewed: October 27, 2021

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