title: Metastasis of cancer to cancer. A case of breast carcinoma metastasizing to a malignant mesothelioma.
abstract: Metastasis of cancer to cancer is exceedingly rare, the most frequent being metastasis from bronchogenic carcinoma to renal carcinoma. A case of breast carcinoma metastasizing to a fibrosarcomatous malignant mesothelioma is presented. Breast carcinoma metastasizing to another carcinoma has been reported 4 times in the past. To our knowledge no case of breast carcinoma metastasizing to a malignant mesenchymal tumor has been published. It is unknown whether metastasis of cancer to cancer is a random occurrence or is due to selective lodging, survival and growth within another malignant neoplasm.
mesh_terms: D001940:Breast / Q000473:pathology; D001943:Breast Neoplasms / Q000473:pathology*; D002277:Carcinoma / Q000473:pathology*; D005260:Female; D006801:Humans; D008654:Mesothelioma / Q000473:pathology / Q000556:secondary*; D008875:Middle Aged; D010994:Pleura / Q000473:pathology; D010997:Pleural Neoplasms / Q000473:pathology / Q000556:secondary*