Conclusion Abdominal EGIST has characteristic imaging findings， with cystic change and necrosis in most cases. Contrast-enhanced CT/MRI scan mainly shows mild to moderate progressive enhancement. CT and MRI examinations can provide an important basis for the clinical diagnosis of EGIST.

    [KEY WORDS] extragastrointestinal stromal tumor; tomography， X-ray computed; magnetic resonance imaging

    胃肠道外间质瘤(EGIST)为主要发生在胃肠道外的原发性间叶源性肿瘤 ......