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CT post-contrast appearance of a G2 pNET: a lesion in the pancreatic body (yellow arrow) shows hypoattenuation in the arterial phase (a) and hyperattenuation in the venous (b) and delayed (c) phases (type B CE pattern). The lesion has an arterial enhancement ratio of <1.1. Note the metastatic lesion (red arrow) in the right liver lobe with peripheral rim enhancement. (d) Immunostaining with CD34 antibody highlights vessels (red), showing that the intratumoural MVD is low (4%).
