Gastric schwannoma: Computed tomography and perigastric lymph node characteristics  

作　　者：Yong-Kang Mo Xia-Pu Chen Liang-Li Hong Yi-Ru Hu Dai-Ying Lin Li-Chun Xie Zhuo-Zhi Dai 

机构地区：[1]Department of Radiology,The First Affiliated Hospital of Shantou University Medical College,Shantou 515000,Guangdong Province,China [2]Department of Radiology,Shantou Central Hospital,Shantou 515000,Guangdong Province,China [3]Department of Pathology,The First Affiliated Hospital of Shantou University Medical College,Shantou 515000,Guangdong Province,China [4]Clinical Research Center,Shantou Central Hospital,Shantou 515000,Guangdong Province,China

出　　处：《World Journal of Gastrointestinal Oncology》2025年第4期153-160,共8页世界胃肠肿瘤学杂志(英文)

基　　金：Supported by the National Natural Science Foundation of China,No.82101985.

摘　　要：BACKGROUND Gastric schwannoma(GS)is often misdiagnosed as gastrointestinal stromal tumors due to the high incidence of the latter.However,these two types differ significantly in pathology and biological behavior.AIM To evaluate the computed tomography characteristics of GS and provide insights into its accurate diagnosis.METHODS Twenty-three cases of GS confirmed between January 2011 and December 2023 were assessed clinically and radiologically.Imaging characteristics,including tumor location,size,contour,ulceration,growth pattern,enhancement degree and pattern,cystic change,calcification,and perigastric lymph nodes(PLNs),were reviewed by two experienced radiologists.RESULTS Our sample included 18 females and 5 males,with a median age of 54.7 years.A total of 39.1%of cases were asymptomatic.GSs appeared as oval and well-defined submucosal tumors,with exophytic(43.5%)or mixed(endoluminal+exophytic;43.5%)growth patterns.The tumors were primarily located in the gastric body(78.3%).Ulcerations were observed in 8 cases(34.5%),and PLNs were observed in 15 cases(65%).The average degree of enhancement was 48.3 Hounsfield units.Twenty cases(87%)showed peak enhancement in the delayed phase.Most GSs were homogeneous,while cystic change(13.0%)and calcification(17.4%)were rare.CONCLUSION GS predominantly showed gradual homogenous enhancement with peak enhancement in the delayed phase.PLNs around GS are helpful in differentiating GS from other gastric submucosal tumors.

关 键 词：Gastric schwannoma STOMACH Computed tomography Perigastric lymph node KI-67 

分 类 号：R73[医药卫生—肿瘤]