| Summary: Objectives: Warthin tumour is the second most frequent benign tumour of the parotid gland after pleomorphic adenoma. |
| Six cases of false positive patients were reported: 2 acinic cells carcinomas, 2 pleomorphic adenomas, 1 dermoïd cyst, 1 branchial cyst. |
| The sarcomatous component featured pleomorphic, plump spindle cells with prominent mitoses. |
| Therefore, a final diagnosis of melanotic pleomorphic xanthoastrocytoma was made. |
| Optic gliomas, subependymal giant cell astrocytomas, pleomorphic xanthoastrocytomas, mixed gliomas with oligodendroglial features, and gangliogliomas were excluded. |
| They are pleomorphic and are most typically rhomboid shaped, although long or short rods and small squares are also seen. |
