The confusing pelvic mass: A case of small intestine lesion diagnosed by endoscopic ultrasound-guided fine-needle biopsy through the sigmoid colon.

Here we report a successful case of a small bowel lesion obtained through EUS-FNB via the sigmoid colon after routine small bowel endoscopy failed due to bowel volvulus. This case highlights the feasibility of EUS-FNB in small intestine lesion acquisition through sigmoid colon.