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Updated: Aug 9, 2026

Induction of Experimental Autoimmune Hypophysitis in SJL Mice
Published on: December 17, 2010
Abstract:
A sixty-five-year-old white man presented with sudden onset of painful, priapism. Review of pathologic specimens at the time of surgical decompression revealed massive amyloid infiltration. Purpura, organ enlargement, gastrointestinal bleeding, and congestive heart failure developed subsequently. Postmortem examination revealed widespread amyloidosis. To our knowledge this is the first report of amyloidosis presenting with priapism.
Insights
This study reports the first known case of amyloidosis presenting as painful priapism in a 65-year-old man. The condition progressed to widespread organ involvement and congestive heart failure.
Area of Science:
- Medicine
- Pathology
- Urology
Background:
- Amyloidosis is a rare condition involving abnormal protein deposits in organs.
- Priapism, a persistent erection, can have various underlying causes.
Observation:
- A 65-year-old man presented with sudden, painful priapism.
- Pathologic examination during surgery revealed extensive amyloid infiltration.
Findings:
- The patient subsequently developed purpura, organ enlargement, gastrointestinal bleeding, and congestive heart failure.
- Postmortem examination confirmed widespread amyloidosis.
Implications:
- This case highlights priapism as a potential, albeit rare, initial presentation of amyloidosis.
- Early recognition of amyloidosis is crucial for managing its systemic complications.
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