title: Endoscopic ultrasound features of gastric schwannomas with radiological correlation: a case series report.
abstract: Gastric schwannomas are rare mesenchymal tumors of the gastrointestinal tract. They are usually misdiagnosed as other submucosal tumors preoperatively. Experience of the imaging features of gastric schwannomas is extremely limited. In this report, we summarize the features of a series of endoscopic ultrasound (EUS) images of gastric schwannomas in an effort to improve the diagnosis and differential diagnosis rate. We retrospectively reviewed the endosonographic features of four patients with gastric schwannomas and their computed tomography imaging results. Gastric schwannomas had heterogeneous hypoechogenicity or isoechogenicity, and a well-demarcated margin. The tumors originated from the fourth layer. Cystic changes and calcification were uncommon. Marginal hypoechoic haloes were observed in two patients. The results described here were different from those of previous studies. In the EUS evaluation, the internal echogenicity of gastric schwannomas was heterogeneous and low, but slightly higher than that of muscularis propria. These features might help us differentiate gastric schwannomas from other submucosal tumors. Further investigation is needed to differentiate these mesenchymal tumors.
authors: Department of Gastroenterology and Hepatology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, Zhejiang Province, China.
authors: Dan-Dan
authors: DD
authors: Zhong
authors: Cai-Hua
authors: CH
authors: Wang
authors: Jing-Hong
authors: JH
authors: Xu
authors: Miao-Yan
authors: MY
authors: Chen
authors: Jian-Ting
authors: JT
authors: Cai
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D004724:Endoscopy; D005260:Female; D006801:Humans; D008875:Middle Aged; D009442:Neurilemmoma / Q000175:diagnosis / Q000000981:diagnostic imaging*; D013274:Stomach Neoplasms / Q000175:diagnosis / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography
keywords: Endosonography; Imaging; Radiological examination; Schwannomas; Stomach