PRIMARY LOCALIZED AL AMYLOIDOSIS OF THE BLADDER MIMICKING RECURRENCE OF BLADDER CARCINOMA

Abstract

Primary bladder amyloidosis is a rare disease, with approximately 200 cases documented in the literature. We herein present a 85-year-old Japanese man who has undergone a transurethral resection of a bladder tumor (TURBT) and has regularly been followed up after surgery. Since cystoscopy revealed mucosal irregularity, he has got a TURBT again for a suspicion of recurrence. There were no malignant findings in pathological diagnosis and we diagnosed as amyloidosis because it showed positive by Congo-red staining. We added immunohistological diagnosis to diagnose as localized AL amyloidosis of the bladder finally.