DIALYSIS-RELATED AMYLOIDOSIS MANIFESTED AS MASSES IN THE BUTTOCKS

A 40-year-old man had enlarging painful gluteal masses that developed after 17 years of hemodialysis. Pathologic examination revealed extens ive deposition of beta(2)-microglobulin amyloid. A bladder biopsy done during evaluation for possible transplantation also showed amyloid de posits. This constellation of findings has not been reported in a pati ent with beta(2)-microglobulin amyloidosis. Patients with dialysis-rel ated amyloidosis should be carefully assessed for systemic involvement . Renal transplantation may prevent further amyloid deposition and pro vide relief of pain.