Fig. 14

Stent malpositioning causing failed relief of LBO. Initial upright (a) and supine (b) plain radiographs showed dilated colon (*) with air-fluid levels (a) consistent with distal mechanical obstruction. CT (c) and endoscopy confirmed a short “apple-core” stricture consistent with sigmoid CRC (arrowhead in c). A week after the procedure, radiographic follow-up (d-f) showed persistently dilated bowel above two angulated SEMS (thick arrows). Immediate surgery was required to remove pT3N0 CRC