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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...
Hyperthyroidism I: Introduction01:25

Hyperthyroidism I: Introduction

Hyperthyroidism is a type of thyrotoxicosis characterized by the thyroid gland's overproduction of the thyroid hormones triiodothyronine (T3) and thyroxine (T4). This hormone excess increases the basal metabolic rate and enhances sensitivity to catecholamines.DiagnosisDiagnosis is based on clinical features and biochemical testing. It typically shows suppressed thyroid-stimulating hormone (TSH) levels below 0.4 mIU/L, with elevated free T3 and/or T4. Additional tests, including thyroid...
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.
Hyperthyroidism II: Pathophysiology01:27

Hyperthyroidism II: Pathophysiology

Hyperthyroidism is a hypermetabolic state caused by elevated levels of thyroid hormones, triiodothyronine (T3) and thyroxine (T4). It results from dysregulation at the thyroid, pituitary, or immune system level and affects multiple organ systems.PathophysiologyThe most common cause of hyperthyroidism is Graves’ disease, an autoimmune disorder in which antibodies, specifically thyroid-stimulating antibodies (TSAb), a subtype of TSH receptor antibodies (TRAb), bind to and activate TSH receptors...

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Related Experiment Video

Updated: Jul 7, 2026

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

A Novel Method: Super-selective Adrenal Venous Sampling

Published on: September 15, 2017

Cushing's Syndrome.

Rosario Pivonello1, Maria Cristina De Martino, Monica De Leo

  • 1Department of Molecular and Clinical Endocrinology and Oncology, Federico II University, Via Sergio Pansini 5, 80131 Naples, Italy. rpivone@tin.it

Endocrinology and Metabolism Clinics of North America
|January 30, 2008
PubMed
Summary

Cushing's syndrome, a rare endocrine disorder causing cortisol excess, leads to severe health issues, primarily cardiovascular disease, and increased mortality. Diagnosis and treatment present significant challenges, impacting patient prognosis.

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Area of Science:

  • Endocrinology
  • Internal Medicine
  • Oncology

Background:

  • Cushing's syndrome is a rare endocrine disorder resulting from prolonged cortisol hypersecretion.
  • It is primarily caused by pituitary tumors (Cushing's disease), but adrenal or ectopic neuroendocrine tumors can also be responsible.
  • The condition is linked to significant morbidity and elevated mortality rates.

Purpose of the Study:

  • To summarize the key aspects of Cushing's syndrome, including its causes, complications, and challenges.
  • To highlight the critical impact of cardiovascular disease as a primary cause of death.
  • To underscore the diagnostic and therapeutic difficulties associated with the condition.

Main Methods:

  • Review of existing literature on Cushing's syndrome.
  • Analysis of epidemiological data and clinical outcomes.
  • Synthesis of information regarding diagnostic criteria and treatment strategies.

Main Results:

  • Cortisol hypersecretion is the hallmark of Cushing's syndrome, with diverse etiologies.
  • Cardiovascular complications are the most severe morbidities and the leading cause of mortality.
  • Effective diagnosis and treatment remain challenging, significantly influencing patient prognosis.

Conclusions:

  • Cushing's syndrome poses substantial health risks, particularly cardiovascular complications.
  • Addressing the diagnostic and therapeutic challenges is crucial for improving patient outcomes.
  • Further research and clinical advancements are needed to optimize the management of Cushing's syndrome.