Intractable hematuria secondary to systemic amyloidosis with bladder involvement.

OBJECTIVE To present the therapeutic management of intractable hematuria secondary to systemic amyloidosis with bladder involvement. METHODS We describe the clinical case, the medical management, the endo-urological technique used, and the results supported by relevant published literature. RESULTS A 50-year-old woman with a 20-year history of rheumatoid arthritis in chronic treatment with corticosteroids and non-steroidal anti-inflammatory drugs in addition to chronic renal insufficiency not requiring hemodialysis. Twenty-four hours after resection of a hepatic hydatid cyst she presented intractable hematuria. The ultrasound and CT scan showed the formation of a large blood clot in the bladder not affecting the upper urinary tract. An intra-operative cystoscopy revealed a distended bladder showing signs of inflammation with diffuse, widespread bleeding. Hemostasis was achieved and a biopsy of the mucosa was taken, associated to bladder irrigation with potassium alum as a hemostatic. Given the persistence of the hematuria, further revision in the operating room as well as blood transfusion were carried out and, due to the hemodynamic instability that could not be controlled, finally selective embolization was performed. Intravesical instillation of dimethyl sulphoxide every 72 hours was used to control any remaining hematuria. The biopsy showed bladder amyloidosis. The addition of intravenous steroids and orally administered colchicine successfully controlled the patient's clinical status. CONCLUSIONS Secondary amyloidosis of the bladder is a condition associated with hematuria that is difficult to manage. Hematuria control is often difficult, requiring aggressive treatment in addition to more conservative approaches.