[Metastasis of benign pleomorphic adenoma]

A case of metastasing pleomorphic adenoma of the parotid gland, which was definitely benign, is reported. 11 years after the first operation of the tumour, which is suspected to have been removed insufficiently, there was a second local recurrence. In routine x-ray of the thorax the metastasis was seen peripherally in the thorax. Using DNA-Cytophotometry the benign character of both specimens could be confirmed. The fact that such a tumour can even produce metastases, proves its easy implantability. This leads to a critical discussion of each intervention, which is not definitive, including fine needle aspiration biopsy. There are only few indications for preoperative invasive interventions.