Gastrointestinal stromal tumor of the stomach: preliminary results of preoperative evaluation with CT gastrography.
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.
Lee
Min Woo
MW
Department of Radiology, Konkuk University Hospital, Seoul, Korea.
Kim
Se Hyung
SH
Kim
Young Jun
YJ
Lee
Jeong Min
JM
Lee
Jae Young
JY
Park
Eun-Ah
EA
Choi
Jin-Young
JY
Han
Joon Koo
JK
Yang
Han-Kwang
HK
Lee
Hyuk-Joon
HJ
Choi
Byung Ihn
BI
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*
D003287:Contrast Media; D001466:Barium Sulfate; D007472:Iohexol; C038192:iopromide