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Clin Exp Nephrol. 2006 Jun;10(2):159-61.

Cystic beta2-microglobulin amyloidoma in a patient on long-term hemodialysis.

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1
Department of Internal Medicine, Showa University Northern Yokohama Hospital, 35-1 Chigasaki-chuo, Tsuzuki, Yokohama 224-8503, Japan. ogatah@med.showa-u.ac.jp

Abstract

We report a patient with beta2 microglobulin amyloidosis (beta2M) in whom cystic tumors were seen in the bilateral axillary region. The patient was a 68-year-old woman who had been on hemodialysis for more than 20 years because of IgA nephropathy. Computed tomography-guided biopsy was performed to confirm the diagnosis. Congo red staining, beta2M immunohistochemistry, and electron microscopy examination of the biopsied sample showed extended beta2M deposits in the cystic tumor. beta2M-related amyloidosis in patients with long-term dialysis commonly presents as osteoarticular disease, although a soft-tissue pseudotumor, known as amyloidoma, has been reported. This is the first report in the English-language literature of amyloidosis presenting as bilateral axillary cystic tumors.

PMID:
16791406
DOI:
10.1007/s10157-006-0409-8
[Indexed for MEDLINE]
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