Lin YM, Chiu NC, Li AFY, Liu CA, Chou YH, Chiou YY. Unusual gastric tumors and tumor-like lesions: Radiological with pathological correlation and literature review. World J Gastroenterol 2017; 23(14): 2493-2504 [PMID: 28465633 DOI: 10.3748/wjg.v23.i14.2493]
Corresponding Author of This Article
Yi-You Chiou, MD, Division of Gastrointestinal Radiology, Department of Radiology, Taipei Veterans General Hospital, No. 201, Sec. 2, Shih-Pai Rd, Taipei 11217, Taiwan. yychiou@vghtpe.gov.tw
Research Domain of This Article
Radiology, Nuclear Medicine & Medical Imaging
Article-Type of This Article
Minireviews
Open-Access Policy of This Article
This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Yuan-Mao Lin, Nai-Chi Chiu, Chien-An Liu, Yi-Hong Chou, Yi-You Chiou, Division of Gastrointestinal Radiology, Department of Radiology, Taipei Veterans General Hospital, Taipei 11217, Taiwan
Nai-Chi Chiu, Anna Fen-Yao Li, Chien-An Liu, Yi-Hong Chou, Yi-You Chiou, Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei 11217, Taiwan
Anna Fen-Yao Li, Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei 11217, Taiwan
Author contributions: Lin YM wrote the paper; Lin YM, Chiu NC, Liu CA and Chou YH performed the imaging collection and literature searching; Li AFY provided the figures and discussion of the pathology; Chiou YY revised the report critically for important intellectual content.
Conflict-of-interest statement: The authors declare that they have no conflict of interest or source of external funding.
Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Correspondence to: Yi-You Chiou, MD, Division of Gastrointestinal Radiology, Department of Radiology, Taipei Veterans General Hospital, No. 201, Sec. 2, Shih-Pai Rd, Taipei 11217, Taiwan. yychiou@vghtpe.gov.tw
Telephone: +886-2-28757357 Fax: +886-2-28769036
Received: December 23, 2016 Peer-review started: December 28, 2016 First decision: January 19, 2017 Revised: January 25, 2017 Accepted: March 15, 2017 Article in press: March 15, 2017 Published online: April 14, 2017 Processing time: 111 Days and 20.6 Hours
Abstract
Although gastric tumors have overlapping radiologic appearances, some unusual tumors may present specific imaging features. Using multidetector computed tomography (MDCT), with water as a negative oral contrast agent and intravenous contrast medium, can provide critical information for the diagnosis of gastric diseases. In addition, MDCT can evaluate the involvement of the gastric wall and extragastric extent of the disease, as compared with gastroenteroscopy and double-contrast upper gastrointestinal study. Regarding lesion location and size, enhancing and growth patterns, presence of calcification or fat, and involvement of the gastric wall and adjacent structures, CT may provide useful information. In this review article, we review the relevant literature and discuss the CT features and the histopathologic findings of different types of gastric lesions. The lesions are divided into benign (glomus tumors, schwannomas, leiomyomas, and lipomas), malignant (gastrointestinal stromal tumors, mucinous carcinomas, lymphomas, and carcinoid tumors), and tumor-like lesions (ectopic pancreas and bezoar). Familiarity with imaging appearances and pathologic findings can help physicians make an accurate diagnosis.
Core tip: Diagnostic imaging of gastric tumors remains a practical challenge. However, in some cases of uncommon gastric tumors and tumor-like lesions, there are some specific radiographic features. Using the multidetector computed tomography, with water as a negative oral contrast agent and intravenous contrast medium, can provide critical information for the diagnosis of gastric diseases. Familiarity with the computed tomography features of these diseases facilitates accurate diagnosis and further management.
