PMC5948314_01
Abdominal radiograph showing dilated large bowel (top) and dilated small bowel (bottom).
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F1
There was no evidence of pneumobilia (Figure 1).
(A) Axial image showing the presence of pneumobilia. (B) Coronal image demonstrating the presence of a cholecystocolic fistula and large bowel obstruction secondary to an impacted gallstone in the sigmoid colon.
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F2
An abdominal/pelvic computed tomography (CT) scan revealed pneumobilia and a cholecystocolic fistula (Figure 2).
Endoscopic visualization of the colonic gallstone.
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F3
It was determined that retrieval was not possible due to the size of the gallstone (Figure 3).
Endoscopic visualization following electrohydraulic lithotripsy.
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F4
Upon visualization of the transverse colon, the colonic mucosa appeared inflamed, but there were no complications such as perforation or hemorrhage after EHL (Figure 4).