| Bizarre cells, nuclear pleomorphism, and mitotic figures were easily found. |
| Vascular invasion, mitosis, and cell pleomorphism are not observed in cases of bronchiolitis obliterans organizing pneumonia. |
| The tumor cells were arranged in trabecular and solid patterns with nuclear pleomorphism, prominent nucleoli, and scant basophilic cytoplasm. |
| The lining cells showed no significant nuclear pleomorphism or mitotic activity. |
| The spindle cells showed moderate nuclear pleomorphism and scattered mitotic figures. |
| Mitosis, size of tumour, necrosis and pleomorphism are thought to be prognostic factors for aggressiveness of solitary fibrous tumours. |
