Metastases
Metastases are usually an ominous finding. They are not always obvious when in encounter; thus, they should be considered with every diagnosis of a malignant tumour.
Specific sites
Internal organs
Lymph node
Main article: Lymph node metastasis
Specific tumours
Melanoma
Main article: Metastatic melanoma
Osteosarcoma
Main article: Osteosarcoma