#pituitary

• Acromegalic — Suffering from acromegaly; characterized by the excessive and disproportionate development of the body's extremities (hands, feet, facial bones, nose, jaw) due to the pathological hypersecretion of growth hormone (somatotropin) after the closure of epiphyseal plates. As a noun, it designates a male individual clinically diagnosed with this chronic neuroendocrine condition, most commonly triggered by a pituitary adenoma.
• Acromegalic — A synonymous variant of the adjective acromegal; relating to acromegaly, manifesting its symptoms, or affected by the hypersecretion of somatotropin. As a noun, the term defines a male individual presenting the clinical picture of the disease, marked by hypertrophy of the facial bones, hands, and feet secondary to a pituitary adenoma.
• Acromegalic woman — The feminine form of the word 'acromegalic'; it defines a female individual or a physical manifestation affected by this neuroendocrine dysfunction. The symptomatology in women comprises, alongside facial and skeletal changes, frequent associations with secondary hypertension and voice deepening.
• Acromegaly — A chronic neuroendocrine disease caused by a pathological hypersecretion of growth hormone (somatotropin) and insulin-like growth factor (IGF-1) in adulthood, after the closure of epiphyseal growth plates. The condition is characterized by the exaggerated enlargement of skeletal extremities (hands, feet), hypertrophy of facial bones (prognatism, prominent brow ridges), soft tissue thickening, macroglossia, and secondary severe cardiac or metabolic dysfunctions.
• Acromicria — A rare pathological clinical condition, considered the opposite of acromegaly, characterized by the unusually small size and insufficient development of the body's extremities (hands, feet, facial bones). This structural syndrome is most often caused by congenital pituitary dysfunctions, diencephalic lesions, or severe secretory disorders of trophic hormones during growth.
• ACTH — International acronym for adrenocorticotropic hormone (or corticotropin), a peptide hormone secreted by the anterior pituitary gland. Its primary structural role is to stimulate the production and secretion of glucocorticoid hormones (especially cortisol) by the adrenal cortex. Monitoring ACTH levels in the blood is essential for diagnosing disorders of the hypothalamo-pituitary-adrenal axis, such as Addison's disease or Cushing's syndrome.
• Adenohypophysis — The anterior and intermediate lobe of the hypophysis (pituitary gland), possessing an epithelial-glandular structure distinct from the neurohypophysis; it is responsible for the synthesis and secretion of most essential trophic hormones, such as growth hormone (GH), prolactin, ACTH, TSH, LH, and FSH. This structural component regulates the metabolic activity and homeostasis of the entire endocrine system through complex feedback mechanisms.
• Adenoma — A form of benign tumor that structurally develops from the epithelial cells of a gland or from tissues exhibiting glandular structures. Although it is non-cancerous and does not metastasize, an adenoma can cause significant clinical problems by compressing neighboring organs or through the excessive and uncontrolled secretion of hormones, as occurs in endocrine glands.
• Adenohypophysis — The anterior lobe of the pituitary gland, of ectodermal origin, with a highly specialized epithelial glandular structure; adenohypophysis. This major component of the endocrine system synthesizes and secretes fundamental tropic hormones into the bloodstream that control somatic growth, thyroid function, adrenal gland activity, and reproductive system dynamics, being directly regulated by hypothalamic neurohormones.
• Anterior pituitary — Pertaining to the anterior pituitary gland (the anterior lobe of the pituitary gland) or secreted by it; adenohypophyseal. The term describes cellular structures, vascular processes, or specific hormones (such as STH, ACTH, TSH, FSH, LH) responsible for regulating the activity of other endocrine glands and general metabolism.
• Apituitarism — A severe clinical syndrome characterized by the complete absence of function or hormonal secretion of the pituitary gland (hypophysis), representing an extreme form of panhypopituitarism. This condition can be congenital or acquired following surgical, tumoral, or vascular destruction of the gland, causing the collapse of secondary endocrine systems (thyroid, adrenals, gonads).