Endoscopic freehand full-thickness resection of a gastric leiomyosarcoma initially diagnosed as gastric leiomyoma on endoscopic ultrasound-guided fine-needle biopsy.

ABSTRACT:

Background and aims

Gastric leiomyosarcoma is a rare tumor arising from the smooth muscle of the stomach that is genetically distinct from gastrointestinal stromal tumors. To date, there are only 24 documented cases of confirmed gastric leiomyosarcoma, to our knowledge. We present the case of a gastric mass initially diagnosed as gastric leiomyoma based on endoscopic ultrasound-guided fine-needle biopsy histopathology, later reclassified as a primary gastric leiomyosarcoma after endoscopic full-thickness resection.

Methods

The lesion was too large to fit into a resection cup and could not be resected using an Ovesco full-thickness resection device system (Ovesco Endoscopy AG, Tübingen, Germany). Resection was subsequently completed with an endoscopic freehand full-thickness

SUBMITTER: Wu MY 

PROVIDER: S-EPMC12744744 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature