Renal cancer in a patient with Crohn's disease and secondary amyloidosis.

Herein we report the case of a patient suffering from renal amyloidosis secondary to Crohn's disease (CD) who presented with anuria and anasarca 8 years after commencement of colchicine treatment. End-stage renal disease was confirmed. Renal imaging prior to hemodialysis showed tumor of the left kidney. Histopathology after nephrectomy revealed secondary amyloidosis as well as the existence of cancer (hypernephroma). We discuss the presence of renal amyloidosis secondary to CD and at the same time renal cancer development, a combination that has not been reported so far, and we emphasize the surprisingly long renal survival of this patient after colchicine treatment.