cancer

noun
a disease caused by an uncontrolled division of abnormal cells in a part of the body.
"he's got cancer"
a malignant growth or tumour resulting from an uncontrolled division of cells.
plural noun: cancers
"most skin cancers are curable"
synonyms: malignant growth, cancerous growth, malignant tumour, tumour, malignancy;
an evil or destructive practice or phenomenon that is hard to contain or eradicate.

synonyms: evil, blight, scourge, poison, canker, sickness, disease, pestilence, plague;