also: こつしゅ
noun
osteoma
Medical term for a benign bone tumor. Used in clinical and pathological contexts.
骨腫は良性の骨腫瘍の一つです。
Osteoma is one type of benign bone tumor.
骨肉腫 (osteosarcoma) is a malignant bone tumor, while 骨腫 is benign.
From 骨 (bone) + 腫 (tumor). A straightforward medical compound.