Primary gastrointestinal stromal tumor of the liver: a case report.

Department of Ultrasonography, Fuzhou General Hospital, Fuzhou, Fujian Province, China.
World Journal of Gastroenterology (Impact Factor: 2.37). 09/2009; 15(29):3704-7.
Source: PubMed


We report a case of primary gastrointestinal stromal tumor (GIST) of the liver. A 17-year-old man with a solid mass in the anterior segment of the right liver was asymptomatic with negative laboratory examinations with the exception of positive HBV. Contrast-enhanced ultrasound (CEUS) revealed a hypervascular lesion in the arterial phase and hypoechoic features during the portal and late phases. However, enhanced spiral computed tomography (CT) showed hypoattenuation in all three phases. Following biopsy, immunohistochemical evaluation demonstrated positive CD117. Different imaging features of primary GISTs of the liver are due to pathological properties and different working systems between CEUS and enhanced spiral CT.

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    • "About 70% of patients with GISTs develop symptoms; the remaining 20% to 30% are diagnosed incidentally or at autopsy [2, 9]. These findings correlate closely with our observation that 5 out of 32 (15%) case reports on GISTs were found incidentally [7, 20, 22, 27, 37]. Approximately 20% to 25% of gastric and 40% to 50% of small intestinal GISTs are clinically malignant. "
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