Fig. 5
From: Primary grade 2 neuroendocrine tumor of the ileal mesentery: a case report
Histopathological findings (H&E). a (× 40) Proliferative infiltration of atypical cells of unequal size and irregular spore structure. Some of them infiltrate the surrounding adipose tissue (arrows). b (× 200) Proliferating atypical cells have round nuclei and relatively abundant cytoplasm with pale eosinophilia. There are narrow fibrovascular interstitial spaces between atypical cell foci (arrows)