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