Gastrointestinal Stromal Tumor in Pregnancy: A Rare Case with Review of Literature

Gastrointestinal stromal tumors (gists) are rare mesenchymal tumors that develop in the wall of the gi tract. the aim of this study was to report a case with gist in pregnancy in western iran. a 39-year-old pregnant woman (g5 p4) was admitted with a chief complaint of abdominal pain and epigastric fullness on april 12, 2016. sonography showed gestational age of 15w+1d and a solid cystic intra-abdominal mass extending from the epigastrium in the midline to the left upper quadrant. on april 20, abdominal mri showed a solid mass measuring 24x15x12.5cm with smooth and well-defined borders. on may 29, the pathology report showed a gross large mass measuring 24x19x10cm attached to a segment of the stomach measuring 20x8cm with heterogeneous cystic hemorrhagic cut surface of the tumor. microscopic pathology reported compatible with gastrointestinal stromal tumor, group 3b (intermediate risk) according to miettinen risk classification. in conclusion, gist in pregnancy is very rare and therefore, there is little diagnostic information about its risk factors, but cd117+/ cd34+ can be an important diagnostic sign for pregnant gist.