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Metastasis is:...

Metastasis is:

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(1)When the cancerous form tumour and if the tumour is not covered in a mamrane,then the cancerous cells spread to nearby parts of the body bynthe process of invasion and angiogenesis.These two process together cause metasrasis.(2)By Metastasis,other healthy cells and tissues are destroyed.(3)In simple terms,it is the spread of cancer throughout the body.(4)Once metastasis occurs,the treatment becomes difficult,symtoms of metastasis depend upon the location to which the cancerous cells spread.(5)There arfe additional symptoms such as swollen lymph nodes,painful bones,vertigo,headaches,seizures,etc.
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