良 性(りょうせい)腫 瘍(しゅよう)

りょうせいしゅよう

noun

benign tumor

medical

1. benign tumor; non-malignant growth

A tumor that stays localized, does not spread to other parts of the body, and is generally not life-threatening. It contrasts with a malignant, cancerous tumor.

検査(けんさ)の結果(けっか)、良性(りょうせい)腫瘍(しゅよう)だった。

The test showed it was a benign tumor.

良性(りょうせい)腫瘍(しゅよう)なので心配(しんぱい)いらないと言(い)われた。

I was told it was a benign tumor, so there was nothing to worry about.

医師(いし)は、しこりは良性(りょうせい)腫瘍(しゅよう)でほぼ転移(てんい)の心配(しんぱい)はないと説明(せつめい)した。

The doctor explained that the lump was a benign tumor with almost no risk of spreading.

Composed of 良性(りょうせい) (benign, non-malignant) + 腫瘍(しゅよう) (tumor, growth). A medical term for a tumor that stays in place and does not metastasize.

Usage

良性(りょうせい)腫瘍(しゅよう)と診断(しんだん)される: to be diagnosed with a benign tumor

Similar words

悪性(あくせい)腫瘍(しゅよう): malignant tumor — a cancerous tumor that can invade tissue and spread; the direct antonym
がん: cancer — the everyday word for a malignant growth

Related Words

Antonym: 悪性腫瘍(あくせいしゅよう) (malignant tumor)

Compare: 癌(がん) (cancer)

general

Added 2026.5.18 12:04 · Revised 2026.9.2 13:02

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