Tumour arising from the cells of the pituitary gland. They may be classified according to size, type of hormone secreted or to histological staining with specific dyes.

A tumour of less than 10 mm in diameter is called a microadenoma and is usually confined within the sella turcica.

A macroadenoma is a tumour of more than 10 mm in diameter and usually extends beyond the confines of the sella turcica, upward toward the chiasm and hypothalamus, downward toward the sphenoid sinus and laterally toward the cavernous sinuses.

Neuroradiological diagnosis is based mainly on MRI findings, since this modality is the most accurate and most informative.

Pituitary adenoma, GH producing (Acromegaly)
Pituitary adenoma, Nonfunctioning
Pituitary adenoma, Prolactin producing
Pituitary adenoma, ACTH producing (Cushings disease)
Pituitary adenoma, TSH producing
Pituitary adenylate cyclase activating polypeptide
Pituitary adrenal axis suppression, Hypothalamic
Pituitary adrenal cortex androgen stimulating hormone
Pituitary adrenal insufficiency
Pituitary apoplexy
Pituitary axis, Hypothalamic
Pituitary carcinoma
Pituitary disease
Pituitary function test, Combined anterior
Pituitary gigantism
Pituitary gland
Pituitary gland, Anterior
Pituitary gland, Posterior
Pituitary incidentaloma
Pituitary infarction
Pituitary insufficiency
Pituitary insufficiency, Posterior (Central diabetes insipidus)
Pituitary irradiation
Pituitary lobe, Intermediate
Pituitary macroadenoma
Pituitary metastases
Pituitary microadenoma
Pituitary snuff takers disease (Hypersensitivity pneumonitis)
Pituitary specific transcription factor (Pit 1 transcription factor)
Pituitary stalk section
Pituitary surgery
Pituitary testicular axis, Hypothalamic