PMC9586516_01
Left: Mixed mass (solid and cystic) in the pancreatic neck measuring 47x38 mm and hyperintense on T2 (arrow). Right: Lesion in the neck of the pancreas measuring 58x32 mm, solid and cystic, with extensive bleeding and clots
3484_Fig1.jpg
PMC9586516_01_3484_Fig1.jpg
f1-3484-1-30367-2-10-20220912
Contrast abdominal magnetic resonance imaging was performed, which showed a bilobate solid and cystic lesion, partially exophytic, on the pancreatic neck, measuring 47x38 mm, iso and hypointense on T1 and hyperintense on T2 (Fig. 1).
Histological results. (A) Haematoxylin: left side: normal pancreas, right side: nest of tumour cells. (B) Synaptophysin and (C) insulin (400x): positive in neuroendocrine cells. (D) Ki67 (400x): proliferation index of 1%
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PMC9586516_01_3484_Fig2.jpg
f2-3484-1-30367-2-10-20220912
Histology revealed a well-differentiated neuroendocrine tumour with a cystic and solid pattern (KI67 of 1%), consistent with a grade 1/3 insulinoma (Fig. 2).