Tumour of sialadens.

To thicket there are malignant tumours in a parotid gland, less often in submandibular and sublingual. For this tumour the hematogenic innidiation (in lungs, bones) is characteristic. At 10 % of patients metastasises in cervical lymph nodes are observed. Malignant tumours for which other histological structure is characteristic, grow quickly, there are no precise borders of a tumour. In process it is involved facial and other nerves. At 50 % of patients the innidiation in cervical lymph nodes is observed.