[Multiple cancer of the external ear]

Neoplasmatic multifocal tumors develop inside the same tissue or organ. They refer to skin, mucosal membrane of gastrointestinal tract or respiratory tract. To diagnose them a histopatological confirmation of their malignancy is needed, there must be macroscopic border line between tumors, the change can not be a metastasis from primary defect. The authors present two cases of external ear squamous cell carcinoma a which appeared bilaterally in different periods of time.