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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...
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...
The Retinoblastoma Gene01:20

The Retinoblastoma Gene

Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
The Retinoblastoma Gene01:20

The Retinoblastoma Gene

Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
The Pituitary Gland01:17

The Pituitary Gland

The pituitary is a small endocrine organ in the sphenoid bone under the hypothalamus. Primarily, the pituitary in adults has two distinct anatomical and functional regions— the anterior and posterior lobes. During human fetal development, a third pituitary gland region called the pars intermedia atrophies and disappears. However, some of its cells migrate and exist adjacent to the anterior pituitary in adults.
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...

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Updated: Jun 7, 2026

Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
07:43

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Familial pituitary adenomas.

S Vandeva1, V Vasilev, L Vroonen

  • 1Department of Endocrinology, University of Liège, CHU de Liège, Belgium.

Annales D'Endocrinologie
|October 22, 2010
PubMed
Summary

Familial pituitary adenomas, unlike sporadic types, are linked to specific gene mutations (MEN1, PRKAR1A, AIP, CDKN1B) and often present more aggressively in younger patients, necessitating early diagnosis.

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07:43

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Two-dimensional Gel Electrophoresis Coupled with Mass Spectrometry Methods for an Analysis of Human Pituitary Adenoma Tissue Proteome
12:34

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Published on: April 2, 2018

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Area of Science:

  • Endocrinology
  • Genetics
  • Oncology

Background:

  • Pituitary adenomas are common intracranial neoplasms causing hormonal imbalances or mass effects.
  • While most pituitary adenomas are sporadic, a subset arises from familial syndromes like MEN1, CNC, FIPA, and MEN-4.

Purpose of the Study:

  • To review the genetic underpinnings and clinical features of familial pituitary adenomas.
  • To highlight the differences between familial and sporadic pituitary adenomas.

Main Methods:

  • Literature review focusing on genetic mutations and clinical characteristics of familial pituitary adenomas.
  • Analysis of genetic alterations in MEN1, CNC, FIPA, and MEN-4 syndromes.

Main Results:

  • Familial pituitary adenomas are associated with specific gene mutations: MEN1 (MEN1 gene), CNC (PRKAR1A gene), FIPA (AIP gene in ~15% of kindreds), and MEN-4 (CDKN1B gene).
  • Familial pituitary adenomas, particularly in MEN1 and FIPA, exhibit more aggressive behavior and earlier onset compared to sporadic forms.

Conclusions:

  • Genetic basis and clinical presentation differ significantly between familial and sporadic pituitary adenomas.
  • Early diagnosis is crucial for managing aggressive familial pituitary adenomas effectively.