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Related Concept Videos

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...
Anatomy of the Adrenal Glands01:17

Anatomy of the Adrenal Glands

The adrenal or supra-renal glands, situated above the kidneys and aligned with the twelfth rib, are paired pyramid-shaped structures crucial for the body's stress response. During stress, these glands secrete hormones vital for adaptive physiological reactions.
These glands possess a distinctive yellow tinge due to the stored cholesterol and fatty acids required for hormone synthesis. They are encased in a fibrous capsule and cushioned by fat.
The adrenal gland comprises two distinct regions...
Hormones of the Adrenal Glands01:31

Hormones of the Adrenal Glands

Adrenal hormones play a pivotal role in maintaining the body's electrolyte balance and orchestrating responses to stress, showcasing the intricate functions of the adrenal cortex and medulla.
The adrenal cortex, a powerhouse of hormone synthesis, generates over two dozen corticosteroid hormones. The zona glomerulosa produces mineralocorticoids, exemplified by aldosterone, influencing the electrolyte composition of body fluids. The synthesis of glucocorticoids such as cortisol and corticosterone...
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...
Sympathetic Pathways: Collateral Ganglia and Adrenal Medulla01:27

Sympathetic Pathways: Collateral Ganglia and Adrenal Medulla

The sympathetic pathways of the collateral ganglia and adrenal medulla serve unique but interconnected roles in the sympathetic response.
Collateral Ganglia
Sympathetic preganglionic axons reach the collateral ganglia along the route of splanchnic nerves. These nerves bypass the sympathetic trunk and communicate with sympathetic postganglionic neurons housed in the prevertebral ganglia. These ganglia supply the organs of the abdominopelvic cavity.
The greater splanchnic nerve, formed by the...

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Related Experiment Video

Updated: Jun 16, 2026

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

A Novel Method: Super-selective Adrenal Venous Sampling

Published on: September 15, 2017

Incidentally-discovered adrenal masses.

Milton D Gross1, Melvyn Korobkin, Wessam Bou-Assaly

  • 1Division of Nuclear Medicine, Department of Radiology, University of Michigan, Ann Arbor, Michigan 48105, USA. mdgross@med.umich.edu

Discovery Medicine
|January 28, 2010
PubMed
Summary

Adrenal incidentalomas, or incidentally discovered adrenal masses, are common. Evaluation is crucial to rule out endocrine disease, cancer, or metastasis, utilizing imaging techniques like CT and MRI.

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Primary Culture of Rat Adrenocortical Cells and Assays of Steroidogenic Functions
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Primary Culture of Rat Adrenocortical Cells and Assays of Steroidogenic Functions

Published on: March 12, 2019

Related Experiment Videos

Last Updated: Jun 16, 2026

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

A Novel Method: Super-selective Adrenal Venous Sampling

Published on: September 15, 2017

Primary Culture of Rat Adrenocortical Cells and Assays of Steroidogenic Functions
04:33

Primary Culture of Rat Adrenocortical Cells and Assays of Steroidogenic Functions

Published on: March 12, 2019

Area of Science:

  • Endocrinology
  • Radiology
  • Oncology

Background:

  • Unanticipated adrenal masses are frequently detected via modern high-resolution imaging.
  • Most incidental adrenal masses are benign adenomas but require evaluation.
  • These masses necessitate exclusion of subclinical endocrine disorders, primary adrenal cancer, and metastases.

Purpose of the Study:

  • To review the evaluation of incidentally discovered adrenal masses.
  • To discuss the role of imaging in characterizing adrenal incidentalomas.

Main Methods:

  • Review of existing literature on adrenal incidentalomas.
  • Discussion of diagnostic imaging modalities including CT, MRI, and nuclear medicine.

Main Results:

  • Adrenal incidentalomas are common findings in diagnostic imaging.
  • Imaging techniques can non-invasively characterize these adrenal neoplasms.
  • Clinical evaluation is essential to exclude serious underlying conditions.

Conclusions:

  • Adrenal incidentalomas require thorough clinical and imaging evaluation.
  • Utilizing CT, MRI, and nuclear medicine aids in characterizing these masses.
  • Distinguishing benign from malignant adrenal masses is critical for patient management.