noun
Medical and general term for a swelling or abnormal growth in the body. Can be used for both benign and malignant masses.
検査で腹部に小さな腫瘤が見つかった。
A small mass was found in the abdomen during the examination.
この腫瘤が良性か悪性かはまだわからない。
It is not yet known whether this tumor is benign or malignant.
Compound of 腫 (swelling) and 瘤 (lump, knot). The reading is on'yomi.