breast cancer
Medical term for breast cancer. Used in both clinical and general contexts.
She had a breast cancer screening.
Early detection is important for breast cancer.
Standard mixed kanji-kana spelling; widely used in medical and everyday contexts.
Full kanji form using 癌; common in medical documents but 癌 is not a jōyō kanji, so 乳がん is often preferred in general writing.
Katakana variant sometimes seen in informal or emphatic contexts; less common than 乳がん.
Compound of 乳 (にゅう, 'breast, milk') and 癌 (がん, 'cancer'). The reading にゅうがん follows standard on'yomi.