Calculus left in remnant gallbladder cause long-term complications in patients undergoing subtotal cholecystectomy.

BACKGROUND: There have been only a few reports that describe the long-term outcomes of Subtotal cholecystectomy (SC).

METHODS: A total of 59 patients underwent "reconstituting" SC at our hospital between January 2005 and July 2017. In the 59 patients, risk factors for long-term complications were analyzed. In addition, in the patients with acute cholecystitis (AC), perioperative and long-term clinical factors were compared for patients who underwent SC (n = 48) and those who underwent total cholecystectomy (n = 378).

RESULTS: In the 59 patients who underwent SC, long-term complication developed in 14 (23.7%), including residual calculus in the common bile duct (n = 12), remnant cholecystitis (n = 1), and persistent severe inflammatory response (n = 1). Postoperative magnetic resonance image was performed in 35/59 patients (59.3%) who underwent SC. In these 35 patients, the size of the remnant gallbladder calculated by magnetic resonance cholangiopancreatography was significantly associated with the occurrence of long-term complications (p = 0.009). In the patients with AC, regarding long-term complications, the incidence of residual calculus in the common bile duct (16.6 versus 0.7%) was significantly higher in the SC group.

CONCLUSIONS: SC was associated with a relatively high incidence of long-term complications associated with remnant calculus.