title: Gastrointestinal stromal tumor of the stomach: preliminary results of preoperative evaluation with CT gastrography.
abstract: BACKGROUND
  To determine whether CT gastrography can be used as a comprehensive imaging modality for the evaluation of gastrointestinal stromal tumor (GIST) of the stomach.
  
  
  METHODS
  Thirty patients with gastric GISTs were included. Using CT gastrography, two radiologists determined the morphology, location, size of the tumor, and the nearest distance from the tumor to the gastroesophageal junction or pylorus in consensus. The ability of 3D CT gastrography in dealing with surface-shaded/transparent images and virtual endoscopic images was also evaluated and compared with the results of barium study and gastroscopy, respectively.
  
  
  RESULTS
  In regard to lesion morphology and location, almost perfect agreements (kappa = 0.87 approximately 1.00) were achieved between CT gastrography and surgery, and the difference in lesion size between CT and surgery was not statistically significant (P = 0.824). In terms of the distance from the tumor to the gastroesophageal junction or pylorus, a statistically significant difference was found between the laparoscopic and open gastric surgery groups (P < 0.001). Findings on CT gastrography were mostly similar or superior to those seen on barium study and gastroscopy.
  
  
  CONCLUSIONS
  CT gastrography can serve as a comprehensive imaging test for the preoperative evaluation of gastric GIST.
authors.affiliation: Department of Radiology, Konkuk University Hospital, Seoul, Korea.
authors.forename: Min Woo
authors.initials: MW
authors.lastname: Lee
authors.forename: Se Hyung
authors.initials: SH
authors.lastname: Kim
authors.forename: Young Jun
authors.initials: YJ
authors.lastname: Kim
authors.forename: Jeong Min
authors.initials: JM
authors.lastname: Lee
authors.forename: Jae Young
authors.initials: JY
authors.lastname: Lee
authors.forename: Eun-Ah
authors.initials: EA
authors.lastname: Park
authors.forename: Jin-Young
authors.initials: JY
authors.lastname: Choi
authors.forename: Joon Koo
authors.initials: JK
authors.lastname: Han
authors.forename: Han-Kwang
authors.initials: HK
authors.lastname: Yang
authors.forename: Hyuk-Joon
authors.initials: HJ
authors.lastname: Lee
authors.forename: Byung Ihn
authors.initials: BI
authors.lastname: Choi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001466:Barium Sulfate; D003287:Contrast Media; D005260:Female; D046152:Gastrointestinal Stromal Tumors / Q000000981:diagnostic imaging*; D005773:Gastroscopy; D006801:Humans; D021621:Imaging, Three-Dimensional; D007472:Iohexol / Q000031:analogs & derivatives; D008297:Male; D008875:Middle Aged; D011857:Radiographic Image Interpretation, Computer-Assisted; D018709:Statistics, Nonparametric; D013274:Stomach Neoplasms / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed / Q000379:methods*
chemical_list: D003287:Contrast Media; D001466:Barium Sulfate; D007472:Iohexol; C038192:iopromide