Concurrent Malignant Solitary Fibrous Tumor Arising from the Omentum and Grade 3 Endometrial Endometrioid Adenocarcinoma of the Uterus with p53 Immunoreactivity
Figure 2
Macroscopic and microscopic findings of the tumor in the peritoneal cavity. (a) The tumor measured approximately 10 cm in the peritoneal cavity and originated from the omentum. The cut surface was milky white and smooth. (b) The tumor was hypercellular and composed of atypical tumor cells with a high mitotic activity (hematoxylin and eosin (HE) stain, objective magnification 20). Inset: large magnification view of the tumor cells with hyperchromatic nuclei and increased mitotic activity (arrow; HE stain, objective magnification 40). (c) The tumor cells were strongly positive for CD34 (objective magnification 20). (d) The tumor cells were moderately positive for p16 (objective magnification 20). (e) The tumor cells were weakly positive for p53 (objective magnification 20).
