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Related Concept Videos

Cushing Syndrome I: Introduction01:26

Cushing Syndrome I: Introduction

Cushing syndrome refers to the collection of clinical manifestations that arise when tissues are exposed to excessive amounts of cortisol or cortisol-like medications over an extended period. Cortisol, a glucocorticoid produced by the adrenal cortex, regulates metabolism, immune responses, and the body’s adaptation to stress. When its concentration remains chronically elevated, these physiological pathways become dysregulated, resulting in the characteristic features of the syndrome.Exogenous...
Cushing Syndrome II: Pathophysiology01:19

Cushing Syndrome II: Pathophysiology

Cortisol production is normally governed by the hypothalamic–pituitary–adrenal (HPA) axis, which maintains hormonal balance through tightly regulated feedback mechanisms. Disruption of this regulatory system is central to the development of Cushing syndrome, whether the excess cortisol originates from external medications or internal pathology. Persistent cortisol elevation alters metabolism, immune function, and endocrine signaling, producing the characteristic clinical features of the...
Adrenal Gland Disorders01:27

Adrenal Gland Disorders

Adrenal gland disorders manifest when the production of adrenal hormones deviates from the norm, resulting in either excessive or insufficient concentrations.
Adrenal insufficiency, characterized by insufficient cortisol and aldosterone production, leads to conditions like Addison's disease. This disorder, affecting the adrenal cortex, exhibits symptoms such as skin bronzing, dehydration, low blood pressure, fatigue, and weight loss. Congenital adrenal hyperplasia, a genetic ailment causing...
Huntington Disease l: Introduction01:21

Huntington Disease l: Introduction

Huntington disease or HD is a progressive, fatal neurodegenerative disorder inherited in an autosomal dominant pattern.PathophysiologyIt is caused by expansion of the CAG trinucleotide repeat in the HTT gene on chromosome 4 (4p16.3), producing an abnormal huntingtin protein with an expanded polyglutamine tract. This misfolded protein disrupts cellular function, leading to neuronal death. Normal alleles have ≤26 repeats, 27–35 are intermediate (risk of expansion), 36–39 show reduced penetrance,...
Hypothalamic-Pituitary Axis01:37

Hypothalamic-Pituitary Axis

The response to stress—be it physical or psychological, acute or chronic—involves activation of the Hypothalamic-Pituitary-Adrenal (HPA) axis. The HPA axis is part of the neuroendocrine system because it involves both neuronal and hormonal communication. Its function is to regulate homeostatic systems—metabolic, cardiovascular, and immune—providing the necessary means to respond to a stressor.
Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...

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Related Experiment Video

Updated: May 17, 2026

A Novel Method: Super-selective Adrenal Venous Sampling
06:08

A Novel Method: Super-selective Adrenal Venous Sampling

Published on: September 15, 2017

Harvey Cushing: Cushing's disease.

Harold Ellis1

  • 1Department of Anatomy, University of London, Guy's Hospital, Guy's Campus, London SE1 1UL.

Journal of Perioperative Practice
|October 30, 2012
PubMed
Summary
This summary is machine-generated.

Basophil adenomas are rare pituitary tumors causing Cushingoid features like obesity and high blood pressure. Today, exogenous corticosteroid use is the most frequent cause of these clinical signs.

More Related Videos

Preparation of Mouse Pituitary Immunogen for the Induction of Experimental Autoimmune Hypophysitis
10:52

Preparation of Mouse Pituitary Immunogen for the Induction of Experimental Autoimmune Hypophysitis

Published on: December 17, 2010

Related Experiment Videos

Last Updated: May 17, 2026

A Novel Method: Super-selective Adrenal Venous Sampling
06:08

A Novel Method: Super-selective Adrenal Venous Sampling

Published on: September 15, 2017

Preparation of Mouse Pituitary Immunogen for the Induction of Experimental Autoimmune Hypophysitis
10:52

Preparation of Mouse Pituitary Immunogen for the Induction of Experimental Autoimmune Hypophysitis

Published on: December 17, 2010

Area of Science:

  • Endocrinology
  • Neurosurgery
  • Oncology

Background:

  • Harvey Cushing described basophil adenomas of the pituitary gland in 1932.
  • These tumors, located at the base of the brain, are rare anterior pituitary tumors.

Observation:

  • The clinical manifestations are striking and include central obesity, fatigue, hypertension, and hyperglycemia.
  • The author notes that despite neurosurgical experience, direct observation of this specific tumor was not encountered.

Findings:

  • While pituitary adenomas can cause Cushingoid features, benign adrenal cortex adenomas are a more frequent cause.
  • Currently, exogenous corticosteroid administration is the most common etiology for Cushingoid features.

Implications:

  • Understanding the differential diagnosis of Cushingoid features is crucial for accurate diagnosis and management.
  • Recognition of exogenous corticosteroid use as the predominant cause impacts clinical suspicion and diagnostic workups.