Pituitary Tumours	

Pituitary tumours account for ten per cent of clinically significant intracranial tumours. Currently, they are most frequently classified as ‘functioning’ or ‘nonfunctioning’, depending on whether a known hormone (for example, prolactin) is produced by the tumour. 

See later:
• Characteristics of Pituitary Tumours
• Pituitary Adenomas
• Prolactinomas
• Pseudoprolactinomas
• Somatotroph Cell Adenomas 
• Corticotroph Cell Adenomas
• Molecular Biology of Pituitary Tumours

See also:
• Local Effects of Hypothalamic or Pituitary Lesions