The goal of this observational study is to systematically describe the clinical characteristics and outcomes of patients with pituitary complex and rare diseases at Peking Union Medical College Hospital. The main questions it aims to answer are:

• What are the influencing factors and rates of remission?
• What are the comorbidities associated with these diseases?
• What are the perioperative events, radiological findings, and pathological features?

Researchers will compare different patient groups to see if there are significant differences in these outcomes.

Participants will:

• Undergo detailed clinical evaluations.
• Provide medical history and data for analysis.
• Participate in follow-up assessments to monitor disease progression and treatment outcomes.

The study aims to provide a comprehensive analysis of pituitary complex and rare diseases at Peking Union Medical College Hospital. By leveraging a large cohort, the research will explore various clinical characteristics and outcomes. Specifically, the study will examine influencing factors and rates of remission, the presence of comorbidities, and perioperative events. Additionally, it will evaluate radiological findings and pathological features to better understand these conditions. Through this detailed investigation, the study seeks to enhance knowledge and inform clinical practice regarding the management and prognosis of pituitary complex and rare diseases.

Inclusion Criteria:

• Diagnosed with rare sellar diseases including but not limited to pituitary adenomas (such as Thyrotropin-secreting pituitary adenomas, GH-secreting adenomas), craniopharyngiomas, Rathke's cleft cysts, sellar region germ cell tumors, cavernous sinus syndrome, and other diseases
• Detailed medical history, including clinical symptoms, treatment plans and follow-up outcomes

Exclusion Criteria:

• Incomplete medical records, especially missing key imaging diagnostic results
• Patients with coexisting primary central nervous system diseases unrelated to sellar region diseases (such as severe traumatic brain injury)
• Patients whose sellar region pathological diagnosis was changed or overturned during the follow-up period

Patients who are diagnosed with Pituitary Complex and Rare Diseases at Peking Union Medical College Hospital