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Related Experiment Videos

Gastrointestinal stromal tumor: computed tomographic features.

Nittaya Chamadol1, Vallop Laopaiboon, Julaluck Promsorn

  • 1Department of Radiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand. nittayachamadol@yahoo.com

Journal of the Medical Association of Thailand = Chotmaihet Thangphaet
|September 24, 2009
PubMed
Summary

Gastrointestinal stromal tumors (GISTs) most commonly occur in the stomach. CT findings show these tumors as inhomogeneous masses, but cannot solely differentiate benign from malignant GISTs.

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Area of Science:

  • Gastroenterology
  • Radiology
  • Oncology

Background:

  • Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal tract.
  • Accurate diagnosis and characterization of GISTs are crucial for patient management.

Purpose of the Study:

  • To describe the anatomical distribution and computed tomography (CT) findings of GISTs.
  • To evaluate CT features that may indicate malignancy.

Main Methods:

  • Retrospective review of abdominal CT images from 16 patients with pathologically proven GISTs.
  • Evaluation of tumor site, size, borders, growth pattern, enhancement, and signs of malignancy.

Main Results:

  • The stomach was the most common GIST location (56.25%), followed by the small bowel (43.75%).

Related Experiment Videos

  • Tumors frequently presented as inhomogeneous extraluminal masses with irregular borders and inhomogeneous enhancement.
  • CT signs suggestive of malignancy included adjacent organ invasion (62.5%) and perilesional fat stranding (93.75%).

    • Conclusions:

    • The stomach is the most common site for GISTs.
    • Typical GISTs appear as inhomogeneous enhancing extraluminal masses.
    • CT findings alone are insufficient to reliably differentiate benign from malignant GISTs.