Disorders involving either the ADENOHYPOPHYSIS or the NEUROHYPOPHYSIS. These diseases usually manifest as hypersecretion or hyposecretion of PITUITARY HORMONES. Neoplastic pituitary masses can also cause compression of the OPTIC CHIASM and other adjacent structures.

Synonyms: Neurohypophyseal Diseases, Disease, Pituitary, Posterior Pituitary Diseases, Disease, Posterior Pituitary, Pituitary Gland Disease, Pituitary Gland Diseases, Pituitary Diseases, Hypophyseal Disorder, Disorders, Pituitary, Disease, Anterior Pituitary, Disorder, Pituitary, Adenohypophyseal Diseases, Disorders, Hypophyseal, Disease, Neurohypophyseal, Pituitary Disease, Posterior, Diseases, Anterior Pituitary, Disease, Adenohypophyseal, Disorder, Hypophyseal, Pituitary Disease, Anterior Pituitary Disease, Neurohypophyseal Disease, Posterior Pituitary Disease, Pituitary Disorders, Anterior Pituitary Diseases, Pituitary Diseases, Anterior, Diseases, Pituitary Gland, Disease, Pituitary Gland, Diseases, Adenohypophyseal, Adenohypophyseal Disease, Pituitary Disorder, Diseases, Pituitary, Diseases, Posterior Pituitary, Pituitary Diseases, Posterior, Pituitary Disease, Anterior, Hypophyseal Disorders, Diseases, Neurohypophyseal