Type:
Educational Exhibit
Keywords:
Abdomen, Gastrointestinal tract, Mesentery, CT, MR, PET, Comparative studies, Surgery, Diagnostic procedure, Cancer, Neoplasia, Tissue characterisation
Authors:
J. W. L. Yip; NSW/AU
DOI:
10.26044/ranzcr2019/R-0003
Imaging findings OR Procedure details
Figures 1, 2:
CT Abdomen demonstrating a large right iliac fossa mass which is predominantly solid with locules of gas.
Figures 3, 4, 5:
MRI showing the same large, lobular mass which has now changed position from the right iliac fossa to the left upper quadrant, displaying low signal intensity on T1 and high signal intensity on T2 with irregular enhancement.
Figure 6:
The large mass displaying moderate 18F-Fluorodeoxyglucose (FDG) avidity on a PET/CT scan.
Figures 7, 8:
Histopathology results from the surgical resection confirming a GIST tumour (spindle cell type) in the mesentery of the small intestine, demonstrating compact sheets of spindle cells with focal areas of palisading pattern. Patchy areas of haemorrhage are demonstrated with no definitive necrosis.