MICROSCOPIC DESCRIPTION: Gastrointestinal Stromal Tumor (GIST)

Procedure: Partial small bowel resection.

Tumor Site: Proximal jejunum.

Tumor Size: 3.5 X 3.0 X 2.5 cm.

Tumor Focality: Unifocal.

GIST Subtype: Spindle cell.

Mitotic Rate: 0/50 HPF.

Necrosis: Present; <5%

Histologic Grade: Low grade.

Risk Assessment: Low.

Margins: Free of tumor.

Pathologic Staging: pT2.

Ancillary Studies: KIT (CD117) and CD34 positive; s100, desmin, cytokeratin negative.

Preresection Treatment: None.


Proximal jejunum, partial resection - Gastrointestinal stromal tumor (GIST).