Metastatis
- Migration of cells from a malignant tumour to a site distant from the primary
Routes of Metastasis
- Lymphatic
- Haematogneous
- Transcoelomic - stomach, ovary, colon, pancreas
- Perineural - adenoid cystic carcinoma of salivary glands
- CSF - medulloblastoma
- Iatrogenic - implantation during surgery