Gastric schwannomas: endosonographic characteristics.
Gastric schwannomas are rare benign neurogenic mesenchymal tumors that are usually asymptomatic but can present with variable symptoms. We retrospectively reviewed the endosonographic features of four patients with gastric schwannomas. A marginal hypoechoic halo was found in three patients with the schwannomas. The histopathological examination showed that the marginal halo on endosonography observed in the schwannomas corresponded to the lymphoid cuff. In addition, the schwannomas had lower echogenicity than the normal surrounding muscle layers. Therefore, these results suggest that gastric schwannomas can be differentiated from gastrointestinal stromal tumors by the marginal halo and the homogeneous hypoechoic endosonographic findings. These distinctions may be useful for the preoperative evaluation of gastric submucosal tumors.
Jung
Min Kyu
MK
Department of Internal Medicine, Kyungpook National University Hospital, 50 Samduk 2-Ga, Chung-gu, Daegu, 700-721, South Korea.
Jeon
Seong Woo
SW
Cho
Chang Min
CM
Tak
Won Young
WY
Kweon
Young Oh
YO
Kim
Sung Kook
SK
Choi
Yong Hwan
YH
Bae
Han Ik
HI
D019160:Endosonography; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D009442:Neurilemmoma / Q000000981:diagnostic imaging* / Q000601:surgery; D013274:Stomach Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery