A malignant tumor: an abnormal growth of tissue cells that invades surrounding tissue and can metastasize (cancer). Medical term contrasted with benign tumor.
検査の結果、悪性腫瘍が見つかったため入院して治療を受けることになった。
As tests found a malignant tumor, he was hospitalized to receive treatment.
悪性腫瘍は早期発見・治療が予後を左右することが多い。
Early detection and treatment of malignant tumors often determine the prognosis.
この病変は良性か悪性腫瘍かを区別するために生検が行われた。
A biopsy was performed to determine whether this lesion was a benign or malignant tumor.