Pituitary tumors are benign tumors that grow slowly, mostly within the pituitary fossa. Due to their proximity to the pituitary gland, small pituitary tumors generally do not show obvious symptoms. However, as the tumor size increases, it can easily compress the pituitary gland, affecting its function, resulting in pituitary dysfunction and causing an endocrine hormone disorder. This leads to a variety of symptoms and signs in patients. A cranial CT or MRI, including an enhanced MRI scan of the pituitary, can reveal a high-density shadow in the pituitary fossa, indicating the presence of an intracranial mass.