Stomach CT Appearances
Gastric GIST Tumor CT Findings
Benign
- Well-circumscribed endophytic, exophytic, or bilobed mass with its epicenter in the submucosa
- Ulceration can be visualized in lesions larger than 2cm (bullseye sign)
Aggressive
- Large (>5cm) heterogenous mass
- Necrosis, hemorrhage, with or without calcifications
- Lymphadenopathy, with or without metastases
- Invasion of adjacent viscera (pancreas, colon)
- Ulcerations very common in malignant GISTs
- Malignant GISTs are often inhomogenous with central necrosis
- Metastases to liver is most common site of metastases
Related Pearls: GIST Tumors
Related Lectures:
CT Evaluation of Gastric Tumors: Pearls and Pitfalls Part 2
MDCT Evaluation of Gastric Malignancies: Pearls and Pitfalls - Part 2
Gastric GIST Tumors: Pearls and Pitfalls - Part 1
Gastric GIST Tumors: Pearls and Pitfalls - Part 2
Gastric GIST Tumors: Pearls and Pitfalls - Part 3
CT of the Stomach: Beyond the Common Gastric Masses - Part 1