Skip to main content
. 2017 Mar 20;12(3):e0173536. doi: 10.1371/journal.pone.0173536

Fig 7. Pathological Findings for Patients with PNET in the Intra-abdominal and Retroperitoneal Regions.

Fig 7

Two PNET cases with masses arising in the hepatogastric space (A-B) (Case no. 4) and the right adrenal gland region (C) (Case no. 2). HE staining showed that the tumor was composed of atypical small round cells with scant cytoplasm, which were arranged in nests with a small amount of stromal components (including collagen fibers and blood vessels) (A) (100×). Cells were arranged into nests and formed a ‘Homer-Wright rosette’ structure (B) (arrowhead) (400×). Stromal elements of the mass usually extended into the central region of the tumor, which showed a crab-like appearance (C) (arrow) (40×).