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[다양한 대장 질환 022 - Colon GIST (애독자 증례 편지 18)]

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45세 남자환자입니다. 용종 절제술을 위해 의뢰된 분으로 펠로우 선생님께서 용감하게 절제술을 하셨는데 다행히 특별한 문제는 없었습니다.

Colon, transverse colon, endoscopic mucosal resection

GASTROINTESTINAL STROMAL TUMOR, VERY LOW RISK (by the guideline on Korean J Pathol 2012;46:443)
1) Tumor size: 1.6x1.2x0.8 cm
2) Mitotic count: 1/ 5 square millimeters
3) Tumor cell type: spindle
4) Extent of tumor: submucosa
5) Necrosis: absent
6) Nuclear pleomorphism: mild
7) Vascular invasion: not identified
8) Perineural invasion: not identified
9) Lymphatic invasion: not identified
10) Surgical margin: free from tumor
11) Lymph node: not submitted
12) Other findings: none
13) Pathologic staging (by AJCC 7th); pT1Nx low mitotic rate

Note) Results of immunohistochemistry;
- C-kit; positive
- SMA; negative
- S-100 protein; negative
- CD34; negative
- Ki-67 labeling index; less than 1%

Korean J Pathol 2012

© 일원내시경교실 바른내시경연구소 이준행. EndoTODAY Endoscopy Learning Center. Lee Jun Haeng.