Diverticulitis and polycystic kidney disease

Patients with adult polycystic kidney disease (PKD) have previously been sh own to have an increased incidence of complicated diverticulitis after rena l transplantation. The purpose of this study was to assess the risk of dive rticulitis in the PKD population. We retrospectively reviewed patients with advanced PKD, defined as end-stage renal failure requiring dialysis. Patie nts were obtained from a single nephrology group practice between January 1 985 and January 1997, or from all patients being evaluated or actively cons idered for renal transplantation at our institution as of May 1997. The inc idence and severity of diverticulitis in these patients was compared with t hat observed in a similar cohort of patients with end-stage renal disease d ue to other etiologies. The study population consisted of 184 renal failure patients, 59 with PKD and 125 with other causes of end-stage renal disease . Twelve (20%) patients with PKD had a history of active diverticulitis, wh ereas only 4 (3%) of the non-PKD controls had diverticulitis (P = 0.0003, F isher's exact test). Six of the 12 PKD patients required surgical intervent ion. Patients with renal failure due to PKD experience a significantly high er rate of diverticulitis than do other patients with end-stage renal disea se. Furthermore, diverticulitis is frequently severe in PKD patients, with 50 per cent requiring surgical intervention. These data suggest that divert icular disease may be an extrarenal manifestation of polycystic kidney dise ase.