Gastric true leiomyoma: computed tomographic findings and pathological correlation.
OBJECTIVE
This study describes the computed tomographic (CT) findings of true leiomyomas in the stomach.


METHODS
Eleven patients with histopathologically proven gastric true leiomyomas were finally enrolled. All cases were CD117 (c-kit) negative on immunohistochemical study. We retrospectively reviewed the CT findings of gastric true leiomyomas for the following considerations: location, morphological features (size, contour, tumor growth pattern, and enhancement pattern), and ancillary findings (ulceration and calcification).


RESULTS
All leiomyomas were in the cardia, with an average tumor size of 36 mm (range, 13-47 mm). Computed tomography scans revealed the morphological features as follows: tumor growth pattern: intraluminal mass (n = 10) and extraluminal masses (n = 1); contour: lobulated margin (n = 7) or smooth margin (n = 4). All lesions showed homogeneous contrast enhancement. Most of the tumors showed lower enhancement than those in the liver (n = 10). One case showed ulceration but no calcification.


CONCLUSIONS
In conclusion, gastric leiomyomas are mainly located in the cardia and usually appeared as homogenous low attenuated masses on computed tomography.
Lee
Mi-Jung
MJ
Department of Diagnostic Radiology, Yonsei University College of Medicine, Seoul, Republic of Korea.
Lim
Joon Seok
JS
Kwon
Ji Eun
JE
Kim
Hoguen
H
Hyung
Woo Jin
WJ
Park
Mi-Suk
MS
Kim
Myeong-Jin
MJ
Kim
Ki Whang
KW
D000328:Adult; D000368:Aged; D003287:Contrast Media / Q000008:administration & dosage; D005260:Female; D006801:Humans; D007472:Iohexol / Q000031:analogs & derivatives; D007889:Leiomyoma / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D011856:Radiographic Image Enhancement / Q000379:methods; D012189:Retrospective Studies; D013270:Stomach / Q000000981:diagnostic imaging; D013274:Stomach Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed / Q000379:methods*
D003287:Contrast Media; C093233:iobitridol; D007472:Iohexol