Both breast hyperplasia and breast cancer can present as breast lumps. The lumps in breast hyperplasia are generally softer or of medium hardness, often occurring bilaterally with multiple lumps of varying sizes. They may appear nodular, plaque-like, or granular, are quite mobile, and have no adhesion to surrounding tissues. The size and characteristics of the lumps commonly change with the menstrual cycle and emotional fluctuations, and they tend to grow slowly, predominantly affecting young and middle-aged women. In contrast, breast cancer lumps are generally harder, usually unilateral and solitary. These lumps may be round, oval, or irregular in shape, can grow quite large, have limited mobility, and tend to adhere to the skin and surrounding tissues. The lumps are not related to the menstrual cycle or emotional changes, can increase in size rapidly over a short period, and are more commonly seen in middle-aged and older women. Sometimes breast cancer can be confused with breast hyperplasia, necessitating a hospital visit for examination and diagnostic differentiation by a doctor.