乳头瘤 Traditional form: 乳頭瘤 Pinyin (reading): rǔtóuliú Definitions: papilloma Characters: 乳 - breast, nipples; milk; to suckle 头 - head; chief, boss; first, top 瘤 - tumor, lump, goiter Traditional characters: 乳 - breast, nipples; milk; to suckle 頭 - head; chief, boss; first, top 瘤 - tumor, lump, goiter