Malignant melanoma begins in body cells that produce a brown color.

VOA: special.2010.07.06

It was a gene that was causing a cell to be malignant and to divide without control, for example.

例如,一个会使细胞恶化,并不受控制地无限分裂的基因

耶鲁公开课 - 生物医学工程探索课程节选

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

Kennedy, the third-longest serving U.S. senator in history, was diagnosed with a malignant brain tumor in May after suffering a seizure at his family home on Cape Cod, Massachusetts.

CNN: Democrats to kick off convention with 'One Nation' theme

When he learned his daughter, Alison, had a malignant brain tumor, nothing else mattered to him but to find a cure for her.

CNN: [Joseph Sacerdote]