Gastrointestinal stromal tumor other imaging findings

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Parminder Dhingra, M.D. [2]

Overview

Fluoroscopy may be helpful in the diagnosis of gastrointestinal stromal tumor.

Other Imaging Findings

Fluoroscopy

On upper abdominal studies, filling defect projecting from the wall of the stomach may be seen, with overlying ulceration or cavitation.

An endoscopic ultrasound(EUS) may also be done in patients of GIST presenting with signs and symptoms of abdominal pain, bleeding or obstructive symptoms. An EUS is considered more accurate than a CT scan in differentiating benign from malignant lesions. Finding on endoscopic ultrasound includes:

• Mucosal ulceration or bleeding
• Smooth submucosal mass as hypoechoic mass
• Malignant GIST lesions present with
  • Heterogeneous mass >4 cm in size
  • Irregular borders
  • Intra and extraluminal growth
  • Multiple cysts within the main lesion

References

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