乙状结肠神经鞘瘤超声诊断一例及文献复习

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中图分类号：R445.1 文献标识码：B 文章编号：1000-503X（2025）05-0776-06

DOI：10.3881/j.issn.1000-503X.16597

ABSTRACT：Sigmoid colon schwannoma is a rare benign gastrointestinal tumor that is challenging to be diagnosed preoperatively.This paper reported acase of sigmoid colonschwannoma that was preoperatively misdiagnosed as a gastrointestinal stromal tumor on ultrasonography. Intraoperative frozen section analysis identified it as a spindlecell tumor，withdefinitive diagnosis confirmedasgastrointestinal schwannomavia immunohistochemistry.This paper summarizes the similaritiesand diferentiating features of intestinal stromal tumorsand schwannomas on ultrasonographic imaging. By analyzing and discussing previous literature，we aim to enhance the diagnosticand differential diagnosticcapabilitiesof ultrasonographers in preoperativeevaluationof intestinal schwannomas，thereby providing reliable evidence for clinicians in the diagnosis and management of this condition.

Keywords：sigmoidcolon；schwannoma；ultrasonography；doublecontrast-enhancedultrasound；diferentialdiagnosis ActaAcadMedSin，2025，47（5） ：776-781

神经鞘瘤是来自神经鞘细胞的良性肿瘤，来源于神经外胚层的施万细胞和中胚层的神经内膜，可发生于全身任何有施万细胞的部位，好发于脊髓和脑，多单发，瘤体生长缓慢，病程可达20年以上。（剩余5542字）