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Related Concept Videos

Diencephalon: Hypothalamus and Coordination01:23

Diencephalon: Hypothalamus and Coordination

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The hypothalamus is a small yet highly complex and essential brain region that plays a crucial role in regulating various bodily functions. Anatomically, it is located at the base of the brain, just above the brainstem and below the thalamus, forming part of the limbic system.
The hypothalamus interacts with other brain regions, including the pituitary gland, through a direct physical connection called the hypothalamic-pituitary axis. The hypothalamus receives somatic and visceral inputs and...
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The Pituitary Gland01:17

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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.
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Diencephalon: Anatomical Regions01:30

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The diencephalon, etymologically translated as 'through brain,' plays an integral role as the conduit between the cerebrum and the vast extent of the nervous system. However, the olfactory system is an exception, as it interfaces directly with the cerebrum. The diencephalon, deeply ensconced beneath the cerebrum, primarily consists of three paired structures — the thalamus, hypothalamus, and epithelamus. It also includes accessory structures such as the subthalamus, which houses the...
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Cranial Part of Parasympathetic Division01:18

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The cranial part of the parasympathetic division plays a crucial role in regulating the visceral functions of the head and specific structures in the neck, thoracic, and abdominopelvic cavities. Preganglionic fibers of the parasympathetic division exit the brain through cranial nerves III (oculomotor), VII (facial), IX (glossopharyngeal), and X (vagus), delivering parasympathetic output to the respective visceral structures.
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Cranial Bones: Lateral View01:27

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The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...
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Hormones of the Pituitary Gland01:27

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The small, pea-sized pituitary gland is located at the base of the brain. It is crucial in regulating various bodily functions, from growth to reproduction. The gland is divided into the anterior lobe and the posterior lobe. The secretory cell clusters in the pars distalis of the anterior pituitary lobe are controlled by hypothalamic regulators and synthesize six primary hormones.
The most abundantly secreted hormone from the anterior lobe is the growth hormone, which controls overall growth by...
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Related Experiment Video

Updated: Oct 29, 2025

Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
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Craniopharyngiomas primarily affecting the hypothalamus.

José María Pascual1, Ruth Prieto2, Maria Rosdolsky3

  • 1Department of Neurosurgery, La Princesa University Hospital, Madrid, Spain.

Handbook of Clinical Neurology
|July 9, 2021
PubMed
Summary

Hypothalamic craniopharyngiomas (Hy-CPs) affect adults, causing hypothalamic dysfunction and psychiatric symptoms. Due to severe adhesions, radical surgery is risky; individualized risk stratification is recommended.

Keywords:
CraniopharyngiomaHypothalamic syndromeHypothalamusInfundibulo-tuberal syndromeMamillary bodiesMedian eminencePituitary infundibulumThird ventricleTuber cinereum

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Area of Science:

  • Neuro-oncology
  • Endocrinology
  • Neuropathology

Background:

  • Craniopharyngiomas (CPs) are tumors affecting the pituitary region.
  • Hypothalamic CPs (Hy-CPs) specifically arise from the third ventricle floor, comprising up to 40% of CPs.
  • Hy-CPs predominantly impact adults, leading to diverse hypothalamic dysfunction symptoms.

Purpose of the Study:

  • To define hypothalamic CPs (Hy-CPs) and their clinical significance.
  • To review the pathological features and surgical challenges of Hy-CPs.
  • To propose an individualized risk stratification for Hy-CP management.

Main Methods:

  • Review of existing literature on hypothalamic craniopharyngiomas.
  • Analysis of pathological characteristics, including adhesion patterns to the hypothalamus.
  • Evaluation of clinical presentation and surgical outcomes.

Main Results:

  • Hy-CPs are associated with significant hypothalamic dysfunction (e.g., diabetes insipidus, cognitive/emotional disturbances).
  • Most Hy-CPs (90%) are squamous-papillary and exhibit severe adhesions to the hypothalamus.
  • These adhesions increase surgical risks threefold, making radical removal inadvisable.

Conclusions:

  • Radical surgical removal of Hy-CPs is generally not recommended due to high risks.
  • Accurate classification based on patient age, tumor characteristics, and adhesion patterns is crucial.
  • An individualized surgery-risk stratification scheme should guide management decisions for Hy-CPs.