Clinicopathological Study of Gastrointestinal Stromal Tumour
DOI:
https://doi.org/10.65129/health.v1i3.90Keywords:
Gastrointestinal Stromal Tumor (GIST); Tyrosine Kinase receptor Inhibitor (TKI); Risk Classification; Prognosis; OutcomeAbstract
Gastrointestinal Stromal Tumors (GISTs) are the most common mesenchymal neoplasms of the gastrointestinal tract, arising predominantly in the stomach and small intestine. They originate from the interstitial cells of Cajal or related stem cells and are characterized by mutations in the KIT or PDGFRA genes. Clinically, GISTs may present with nonspecific symptoms such as abdominal pain, gastrointestinal bleeding, or may be incidentally discovered. Histologically, they display spindle cell, epithelioid, or mixed morphology, and immunohistochemical staining for CD117 (KIT), DOG1, and CD34 aids in diagnosis. Risk stratification is based on tumor size, mitotic index, and anatomical location. Surgical resection is the primary treatment for localized disease, while targeted therapy with tyrosine kinase inhibitors (e.g., imatinib) is effective in advanced or metastatic cases. Recent advancements in molecular diagnostics and targeted therapy have significantly improved the prognosis of GIST patients.
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