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[Soft tissue amyloidoma].
Toyotaka Iguchi1, Masahiro Kizaki, Asako Kurauchi
1Division of Hematology, Department of Internal Medicine, Keio University School of Medicine.
[Rinsho Ketsueki] the Japanese Journal of Clinical Hematology
|January 31, 2006
Summary
A rare case of soft tissue amyloidoma in the gluteus was identified in a 59-year-old man presenting with arm pain. This finding highlights the unusual presentations of amyloidoma, emphasizing the need for comprehensive evaluation.
Area of Science:
- Oncology
- Pathology
- Radiology
Background:
- Amyloidoma is a rare condition characterized by localized amyloid deposition.
- Soft tissue amyloidomas are exceptionally uncommon, posing diagnostic challenges.
Observation:
- A 59-year-old male presented with exertional right arm pain, initially attributed to a humeral tumor.
- Histological examination revealed necrotic tissue, with no malignant cells detected.
- Bone surveys showed multiple lucencies, and a pelvic CT scan identified a large, painless gluteal mass consistent with amyloidoma.
Findings:
- The patient exhibited M proteins on serum protein electrophoresis, but without immunoglobulin monoclonality.
- The gluteal mass was diagnosed as a soft tissue amyloidoma, a rare occurrence.
- Multiple bone lesions were observed, suggesting a systemic or widespread amyloid deposition process.
Implications:
- This case underscores the importance of considering rare diagnoses like soft tissue amyloidoma in patients with unexplained masses.
- The findings suggest that amyloidoma can present with diverse and seemingly unrelated symptoms, necessitating thorough diagnostic workups.
- Further research into the pathogenesis and optimal management of soft tissue amyloidoma is warranted.