To date, the causes of pituitary tumors in men are not particularly clear, and are thought to be related to the following: 1. There is a relationship between oncogenes and the occurrence of pituitary tumors, with the most research on the GSP gene family. The alteration of oncogenes may predispose patients to pituitary tumors, also known as pituitary tumors. 2. Alteration of oncogenes. There are some mutations of oncogenes that can cause patients to develop pituitary tumors.3. Alterations of pituitary tumor transformation genes. It is a very powerful tumor transformation gene, and if there is a problem with this gene, it can cause the patient to develop pituitary tumor. 4. other promoting factors, which can also promote the occurrence of pituitary tumor.