2012 Volume 54 Issue 7 Pages 2014-2021
A 64-year-old female was referred to our department complaining of tarry stools while under admission for acute pyelonephritis. Single-balloon endoscopic examination revealed a solitary pedunculated polyp covered with a large quantity of hematomata in the ascending portion of the duodenum with a diameter of 30 mm. Given the risk of rebleeding and the fact that the lesion measured 30 mm, the polyp was resected with endoscopic polypectomy using single-balloon endoscopy. Histologically, the polyp consisted of branching bundles of smooth muscle fibers covered with hyperplastic epithelium. Because the patient did not have a past or family history of mucocutaneous pigmentation or gastrointestinal polyps, the case was diagnosed as a solitary Peutz-Jeghers type hamartomatous polyp of the duodenum. Solitary Peutz-Jeghers type hamartomatous polyps of the duodenum are extremely rare, and we reported on our case with a review of the literature.
