左乳腺叶状囊肉瘤１例张光文１刘语琪２李书学１崔瑞林１王文军１１患者，女，３０岁，未婚。３月前洗澡时发现左乳房外上方有一约蚕豆大的肿块，无症状未做任何诊治。此后肿块渐增大，入院前１月肿块生长加速，感坠痛、无局部皮肤发红、乏力、消瘦、溢乳等，以左乳肿块性... Left breast phyllodes cystosarcoma 1 case Zhang Guangwen 1 Liu Yuqi 2 Li Shuxue Cui Ruilin 1 Wang Wenjun 11 Patients, female, 30 years old, unmarried. When bathing 3 months ago, it was found that there was a large lump of faba bean outside the left breast, and no symptoms were diagnosed. After that, the masses gradually increased, and the mass growth accelerated in January before admission. There was a sense of falling pain, no local skin redness, fatigue, weight loss, galactorrhea, etc.