Cancerbackup: Pituitary Tumours - Provides definition, cause, symtoms, tests, and treatment available for Pituitary cancer. - http://www.cancerbackup.org.uk/Cancertype/Brain/Typesofbraintumour/Pituitarytumours
NCI: Pituitary Tumor - Information resource from the U.S. National Cancer Institute which discusses genetics, causes, prevention and treatment matters. - http://www.cancer.gov/cancertopics/types/pituitary/
NINDS: Pituitary Tumors - Information sheet compiled by the U.S. National Institute of Neurological Disorders and Stroke which discusses definitions, prognosis, treatment and research issues. - http://www.ninds.nih.gov/disorders/pituitary_tumors/pituitary_tumors.htm
National Institutes of Health: Prolactinoma - Online booklet format discussing issues of definition, statistics, symptoms, diagnosis and treatment. - http://www.niddk.nih.gov/health/endo/pubs/prolact/prolact.htm