title: Benign submucosal lesions of the stomach and duodenum: imaging characteristics with endoscopic and pathologic correlation.
abstract: Benign submucosal lesions of the stomach and duodenum are occasionally encountered during endoscopy. But endoscopy has its limitations in the diagnosis and differentiation of these lesions, because submucosal lesions are often difficult to visualize at endoscopy due to minimal change of the overlying mucosa. Furthermore, endoscopic biopsy may not always yield adequate tissue for diagnosis due to the submucosal location of the lesions. For this reason, the role of radiologic imaging is important in the diagnosis of submucosal lesions of the stomach and duodenum. Recent advances in computed tomography (CT) and sonographic technology are helpful in narrowing the differential diagnosis of gastroduodenal submucosal lesions. In contrast to endoscopy and barium studies, CT or ultrasonography (US) provides information about both the gastric wall and the extragastric extent of the disease. Arterial phase contrast enhanced CT enables us to discriminate a mass of submucosal from that of a mucosal origin in the differential diagnosis of gastric or duodenal lesions. Although endoscopic sonography has been considered the better modality in the diagnosis of gastroduodenal submucosal lesions, transabdominal sonography can still be an alternative method to endoscopic sonography in assessing of the origin and character of the submucosal lesions. Some gastroduodenal submucosal lesions have similar radiologic findings that make differentiation difficult. But despite overlaps in radiologic findings, some lesions have characteristic radiologic features that may suggest a specific diagnosis. Knowledge of the differential diagnosis of benign submucosal lesions in the stomach and duodenum may promote correct diagnosis and appropriate treatment.
authors.affiliation: Department of Diagnostic Radiology, Dong-A University College of Medicine, Busan, Republic of Korea. jy5966@yahoo.co.kr
authors.forename: Jong Young
authors.initials: JY
authors.lastname: Oh
authors.forename: Kyung Jin
authors.initials: KJ
authors.lastname: Nam
authors.forename: Jong Cheol
authors.initials: JC
authors.lastname: Choi
authors.forename: Jin Han
authors.initials: JH
authors.lastname: Cho
authors.forename: Seong Kuk
authors.initials: SK
authors.lastname: Yoon
authors.forename: Sun Seob
authors.initials: SS
authors.lastname: Choi
authors.forename: Hee Jin
authors.initials: HJ
authors.lastname: Kwon
authors.forename: Jung Hee
authors.initials: JH
authors.lastname: Yoon
authors.forename: Su Jin
authors.initials: SJ
authors.lastname: Kim
mesh_terms: D004379:Duodenal Neoplasms / Q000175:diagnosis*; D004724:Endoscopy / Q000379:methods*; D005753:Gastric Mucosa / Q000473:pathology*; D006801:Humans; D007413:Intestinal Mucosa / Q000473:pathology*; D013274:Stomach Neoplasms / Q000473:pathology*