Malignant Extragastrointestinal Stromal Tumours: what are the Prognostic features to depend upon? 369-371
Usha Dubey, Dept of Pathology, G.S.V.M. Medical College,
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Extragastrointestinal stromal tumours (EGISTs) are rare intra abdominal tumours which occur in the omentum, the mesentry and other intra abdominal sites. Their histogenesis is said to be from the interstitial cells of the Cajal, as these cells express CD-117. The differential diagnosis includes fibromatosis, smooth muscle and neural tumours, etc. We present a case of a 50 year old man, who presented with acute pain in the abdomen. Ultrasonography (USG) showed multiple, round, homogenous, hypoechoic masses in the mesentry, measuring 1.5 to 2.5 cm in diameter.
USG guided fine needle aspiration was performed. On the basis of the cytological findings, a diagnosis of malignant spindle cell lesion was made. On the basis of the histopathological findings, the tumour was diagnosed as an extragastrointestinal stromal tumour. The tumour showed CD-117 positivity, which confirmed the diagnosis. We are presenting this case to highlight the diagnostic features and the prognostic values of the different features which are mentioned in different literatures.