A cancer is a malignant tumour.

癌是一种恶性瘤。

《新英汉大辞典》

Malignant mesothelioma is a life-threatening type of cancer commonly caused by exposure to asbestos.

恶性间皮瘤是一种致命的癌症，它通常是由于长期接触石棉而造成的。

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In a worse case scenario, the defective blueprint can call for construction of a malignant tumor - skin cancer.

更严重的情况是：这种缺陷会导致恶性肿瘤的产生，最后演变成为皮肤癌。

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Robson has had successful operations for colon cancer and a malignant melanoma on his face.

CNN: Sir Bobby Robson taken to hospital

Ms Sumani developed malignant myeloma, a cancer affecting the bone marrow, while living in Cardiff.

BBC: RELATED BBC SITES

He beat bowel cancer in 1992, a malignant melanoma in 1995 and a tumour in his right lung and a brain tumour, both in 2006.

BBC: Legend Sir Bobby Robson, 76, dies