gastrointestinal stromal tumor


gastrointestinal stromal tumor

[MIM*606764] benign or malignant tumor composed of unclassifiable spindle cells; immunohistochemically distinct from smooth muscle and Schwann cell tumors.

gastrointestinal stromal tumor

GIST Surgical pathology A nonmucosal GI tumor most common in the stomach Clinical Benign–leiomyoma or malignant–leiomyosarcoma, determined histologically by ↑ mitotic activity and bizarre cells, findings seen in aggressive lesions. See Leiomyoma, Leiomyosarcoma.

gas·tro·in·tes·ti·nal stro·mal tu·mor

(gas'trō-in-tes'ti-năl strō'măl tū'mŏr) Benign or malignant tumor composed of unclassifiable spindle cells; immunohistochemically distinct from smooth muscle and Schwann cell tumors.