[Extramedullary plasmocytoma of the left tonsil. A rare cause of tonsillar asymmetry].

The plasmocytoma is a tumor, which can only rarely be found in the oropharynx. In this respective case an asymmetria of the tonsils was caused by an extramedullary plasmocytoma. Even if the asymmetria of the tonsils has a harmless nature, a tumor growth always has to be considered when thinking of the differential diagnosis. First of all, squamous-cell carcinoma has to be taken into account, more rarely with malignant lymphoma. Tonsillektomie added by immunhistological examination of the preparation brings diagnostic certainty.