Breast carcinoma metastasis to paranasal sinuses

: The presented case is breast cancer metastatic into the paranasal sinuses. Accompanied symptoms suggested thrombosis of cavernosus sinus with very fast growing eye and neurological symptoms caused by metastases to brain tissue. Breast cancer metastatic into the paranasal sinuses is extremely rare and usually ends with death, as it is a result of neoplastic dissemination and does not react to systemic treatment. This type of neoplasm was for the first time presented in literature by Robin in 1938. Until 1994 nine cases of patients suffering from this type of neoplasm have been described. All of them died.