If a mammary hyperplasia reaches grade 4a, which is a kind of staging performance in clinical imaging, reaching this level generally indicates that the cells of the mammary hyperplasia are not particularly regular and have the potential for malignant transformation. It must be combined with a mammogram to see if there is any calcification in the hyperplastic mass or if there are some irregularities in the imaging performance. If available, patients with grade 4a breast enlargement can undergo pathological puncture, which is the gold standard for diagnosing benign breast enlargement or breast cancer. The pathology test will be able to reach a complete diagnosis or exclude breast cancer. Therefore, when a patient has hyperplasia of grade 4a or higher, the best choice is to go to a regular hospital for a puncture biopsy and pathological identification, which is the gold standard for identifying benign and malignant breast hyperplasia.