Different Types of Periampullary Duodenal Diverticula Are Associated with Occurrence and Recurrence of Bile Duct Stones: A Case-Control Study from a Chinese Center

Abstract EN

Aims.

We here investigated the association of different types of periampullary diverticula (PAD) with pancreaticobiliary disease and with technical success of endoscopic retrograde cholangiopancreatography (ERCP).

Methods.

A total of 850 consecutive patients who underwent their first ERCP were entered into a database.

Of these patients, 161 patients (18.9%) had PAD and the age- and sex-matched control group comprised 483 patients.

Results.

PAD was correlated with common bile duct (CBD) stones (59.6% versus 35.0% in controls; P=0.008) and negatively correlated with periampullary malignancy (6.8% versus 21.5% in controls; P=0.004).

The acute pancreatitis was more frequent (62.5%) in patients with PAD type 1 followed by PAD type 2 (28.9%, P=0.017) and type 3 (28.0%, P=0.006).

No significant differences were observed in successful cannulation rate and post-ERCP complications among the 3 types of PAD.

Type 1 PAD patients had less recurrence of CBD stones than did the patients who had type 2 or type 3 PAD (53.8% versus 85.7%; P=0.043).

Conclusions.

PAD, especially type 1 PAD, is associated with an increased acute pancreatitis as well as occurrence and recurrence of CBD stones.

PAD during an ERCP should not be considered as an obstacle to a successful cannulation.