A 54 year-old woman who had had 4 years history of ulcerative colitis (UC) was admitted to our hospital because of recently developed proteinuria and leg edema. On admission, laboratory findings disclosed massive proteinuria, hypoalbuminemia, accelera-tion of ESR and elevated of CRP. Her abdominal symptom was remmited. Renal biopsy showed amyloid deposition in glomeruli and arteriole. Amyloid deposition was also found on rectal biopsy. She had no evidence of familial amyloidosis and multiple myeloma. In this case, amyloid deposition might be developed after UC. Secondary amyloidosis due to UC was extremely rare, only 3 cases including ours were reported in Japan.
