Gastrointestinal stromal tumor differential diagnosis
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Gastrointestinal stromal tumor Microchapters |
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Differentiating Gastrointestinal stromal tumor from other Diseases |
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Diagnosis |
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Treatment |
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: Akshun Kalia M.B.B.S.[2]Parminder Dhingra, M.D. [3]
Overview
Gastrointestinal stromal tumor must be differentiated from other mesenchymal tumors such as gastrointestinal leiomyoma, gastrointestinal leiomyosarcoma, gastrointestinal carcinoma, gastrointestinal schwannoma and melanoma.
Differential Diagnosis
Around 75 % of the patients with gastrointestinal stromal tumors (GIST) are asymptomatic and the rest have non-specific symptoms such as vague abdominal pain and discomfort. Thus, GIST must be differentiated from other tumors on the basis of cell markers. GIST must be differentiated from other mesenchymal tumors such as gastrointestinal leiomyoma, gastrointestinal leiomyosarcoma, gastrointestinal carcinoma, gastrointestinal schwannoma and melanoma.[1]
| Marker | GIST | GI leiomyoma | GI Leiomyosarcoma | Schwannoma | GI carcinoma | Melanoma |
|---|---|---|---|---|---|---|
| CD117 | Positive (95%) | Negative | Negative | Negative | Positive (50%) | Positive |
| CD34 | Positive (70%) | Negative | Negative | Positive (33%) | Negative | negative |
| DOG 1 | Positive (95%) | Negative | Negative | Negative | Negative | Rare |
| Other
Markers |
Desmin positive
in 1-2% |
Desmin positive in
100% cases |
Desmin positive but
variable proportion |
GFAP positive | Keratin positive | S100 positive |
References
- ↑ West RB, Corless CL, Chen X, Rubin BP, Subramanian S, Montgomery K, Zhu S, Ball CA, Nielsen TO, Patel R, Goldblum JR, Brown PO, Heinrich MC, van de Rijn M (2004). "The novel marker, DOG1, is expressed ubiquitously in gastrointestinal stromal tumors irrespective of KIT or PDGFRA mutation status". Am. J. Pathol. 165 (1): 107–13. doi:10.1016/S0002-9440(10)63279-8. PMC 1618538. PMID 15215166.
- ↑ "Gastrointestinal stromal tumour".