1, mastocytosis and fibroadenoma: both can see breast lumps, single or multiple, firm texture, mastocytosis breast lumps are mostly bilateral multiple, lump size varies, nodular, lumpy or granular, texture is generally soft, can also be hard and tough, occasionally unilateral single, but mostly accompanied by premenstrual breast swelling, touch also feel pain, and the size of the breast lump nature can be with menstruation and Most breast lumps in mammary fibroadenoma are unilateral, round or oval, with clear borders, high mobility, and generally firm and solid texture. In addition, on mammograms, breast fibroadenoma often appears as round or oval shadows of uniform density and its characteristic ring-shaped transparent halo, which can be an important basis for differential diagnosis. Breast lumps can be seen in both cases, but the texture of breast lumps in mastoproliferative disease is generally soft or moderately hard, and the lumps are mostly bilateral and multiple, vary in size, and can be nodular, lumpy or granular, active, without adhesion to skin and surrounding tissues. Breast lumps are usually hard, some are as hard as stone, most of them are unilateral, round, oval or irregular in shape, can grow to a large size, poor mobility, easy to adhere to skin and surrounding tissues, lumps are not related to menstrual cycle and emotional changes, can increase rapidly within a short period of time, and are more common in middle-aged and elderly women.