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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...
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...
Goiter01:27

Goiter

Goiter refers to an abnormal enlargement of the thyroid gland that may appear as a diffuse goiter (uniform enlargement) or nodular (single or multiple nodules). Functionally, it is classified as nontoxic (normal/low hormone levels) or toxic (excess hormone production).PathophysiologyDiffuse thyroid enlargement typically results from prolonged stimulation by thyroid-stimulating hormone (TSH) or TSH-like agents, commonly seen in hypothyroidism or iodine deficiency. In contrast, in hyperthyroid...
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...
Cirrhosis I: Introduction01:23

Cirrhosis I: Introduction

Cirrhosis is a chronic, irreversible liver disease characterized by the widespread replacement of healthy liver tissue with fibrotic scar tissue and the formation of regenerative nodules.Etiology of cirrhosisCirrhosis results from sustained liver injury that triggers progressive fibrosis and structural remodeling. The underlying causes are diverse, encompassing common and less frequent clinical conditions. Regardless of the origin, all causes lead to chronic inflammation, hepatocyte loss, and...

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Related Experiment Video

Updated: Jul 22, 2026

A Novel Method: Super-selective Adrenal Venous Sampling
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Acromegaly.

J D Nabarro1

  • 1Middlesex Hospital, London.

Clinical Endocrinology
|April 1, 1987
PubMed
Summary

This study describes 256 acromegaly/gigantism cases, highlighting diagnostic delays and common symptoms like headaches and appearance changes. Successful treatment can normalize growth hormone levels and improve associated conditions such as hypertension and diabetes.

Area of Science:

  • Endocrinology
  • Oncology
  • Cardiology

Background:

  • Acromegaly and gigantism are rare conditions caused by excess growth hormone (GH).
  • Delayed diagnosis is common due to the insidious onset of symptoms.
  • This series reviews a significant number of cases over two decades.

Purpose of the Study:

  • To describe the clinical features and outcomes of 256 acromegaly/gigantism patients.
  • To analyze diagnostic delays and presenting symptoms.
  • To evaluate the impact of treatment on various associated comorbidities and mortality.

Main Methods:

  • Retrospective analysis of 256 patient cases from 1963-1983.
  • Utilized the Hardy system for radiological grading of pituitary tumors.
  • Documented symptoms, clinical features, comorbidities, and treatment outcomes.

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Midface Hypoplasia and Cranial Base Morphology in Syndromic Craniosynostosis: A Comparative Analysis Study Using a Predictive Regression Model
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Midface Hypoplasia and Cranial Base Morphology in Syndromic Craniosynostosis: A Comparative Analysis Study Using a Predictive Regression Model

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Last Updated: Jul 22, 2026

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Main Results:

  • Diagnosis was often delayed, with common presenting symptoms including headache, altered appearance, carpal tunnel syndrome, amenorrhea, and diabetes.
  • Hypertension incidence was increased but responsive to treatment; coronary artery disease was not.
  • Diabetes mellitus resolved in most cases post-treatment; increased mortality was observed, particularly in women and younger men.

Conclusions:

  • Acromegaly presents with diverse symptoms, often leading to diagnostic delays.
  • Treatment can effectively manage comorbidities like hypertension and diabetes.
  • Increased mortality rates underscore the systemic impact of untreated acromegaly.