[Five simultaneous neoplasms]

One case of five independent tumors is reported: Fibrosarcoma of the right thigh, bilateral carcinoma of breast, papillary carcinoma of thyroid, and basalioma below the left clavicula. A synopsis of literature containing the rare cases of more than three primary tumors is presented. The difficulties concerning localization, origin and registration of multiple primary malignancies and their differentiation to recurrencies and metastases are discussed.