[Primary bladder amyloidosis]

Primary amyloidosis of the bladder is a rare disease entity manifested as extracellular deposits of a fibril protein in an amyloid substance form. Clinical presentation resembles a bladder tumor, as hematuria is the most common clinical manifestation. Single organ affectation is most frequent in the bladder, however, we have found less than 100 cases. We present the case of a woman with primary amyloidosis of the urinary bladder with symtoms of hematuria. Endoscopic examination suggested a bladder tumor.