| It is possible that they represent other histologies, such as pleomorphic adenomas. |
| Summary: Objectives: Warthin tumour is the second most frequent benign tumour of the parotid gland after pleomorphic adenoma. |
| Optic gliomas, subependymal giant cell astrocytomas, pleomorphic xanthoastrocytomas, mixed gliomas with oligodendroglial features, and gangliogliomas were excluded. |
| Fine-needle aspiration and core biopsy were performed and showed a neoplasm composed of pleomorphic, spindle-shaped cells. |
| The tumor cells had slightly eosinophilic cytoplasm and pleomorphic nuclei with prominent nucleoli. |
| The sarcomatous component featured pleomorphic, plump spindle cells with prominent mitoses. |
