Sellar / Pituitary Mass - Differential Diagnosis Algorithm
Adenoma - Primary Anterior Pituitary
- Secreting
• Prolactin
• GH
• ACTH
• TSH
• LH/FSH
• Mixed
- Non-Functioning
• Oncocytoma
• Null Cell Adenoma
Non-Adenomatous
- Vascular
• Aneurysm
• Infarction
- Hamartoma
- Neoplasm
• Craniopharyngioma
• Meningioma
• Cyst
• Glioma
• Ependymoma
- Metastatic
Hyperplasia
• Physiological (e.g. Pregnancy)
• Compensation (e.g. Hypothyroidism)
• Stimulatory (e.g. Ectopic GNRH, CRH)
Inflammatory
• Infectious
• Autoimmune
• Giant Cell Granuloma
• Langerhan's Cell
• Histiocytosis
• Sarcoidosis
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