Читать книгу The Cancer Directory - Dr. Daniel Rosy - Страница 90

Cancer that develops in the body away from the site of the original tumour is called a ‘secondary cancer’ or a metastasis. These may be found at the time of diagnosis or they may develop later on. If secondaries appear, it can often be a more severe blow than the original diagnosis.

Cancer can spread around the body by:

• invading local tissues

• entering the lymphatic system and lymph nodes

• entering the bloodstream and travelling to distant sites

• direct infiltration of a neighbouring organ.

Some cancers have a predictable route of spread and favour certain organs for secondaries whereas others are more unpredictable.