Gastrointestinal Stromal Tumor of the Colon Mimicking Inflammatory Fibroid Polyp with a Novel 63 bp c-kit Deletion Mutation: A Case Report
Korean Journal of Pathology
;
: 374-377, 2009.
Article
in English
| WPRIM
| ID: wpr-108858
ABSTRACT
Colonic gastrointestinal stromal tumors (GISTs) are rare and behave aggressively compared to GISTs in other parts of the gastrointestinal tract. Therefore, accurate diagnosis of GISTs and their distinction from other mesenchymal tumors is important for proper patient management and follow-up. Herein, we present an unusual case of a colonic GIST mimicking an inflammatory fibroid polyp with a novel 63 bp deletion mutation in exon 11 of the c-kit gene, which has not previously been reported. The tumor consisted of loosely arranged spindle cells and many inflammatory cells scattered throughout the tumor. Immunohistochemically, the tumor cells were focally and weakly positive for c-kit and diffusely positive for CD34, but were negative for PKC-theta, SMA, S-100 protein, ALK-1, and desmin. Our case re-emphasizes the broad morphologic spectrum of GISTs.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Polyps
/
S100 Proteins
/
Colonic Polyps
/
Exons
/
Follow-Up Studies
/
Sequence Deletion
/
Colon
/
Gastrointestinal Tract
/
Gastrointestinal Stromal Tumors
/
Desmin
Type of study:
Observational study
/
Prognostic study
Limits:
Humans
Language:
English
Journal:
Korean Journal of Pathology
Year:
2009
Type:
Article
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