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Related Concept Videos

Cranial Nerves: Overview and Anatomy01:19

Cranial Nerves: Overview and Anatomy

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The cranial nerves are an important part of the complex network of nerves in the human body. These nerves emerge directly from the brain and are responsible for transmitting essential information between the brain and various parts of the head and neck. There are 12 pairs of cranial nerves, systematically numbered using Roman numerals from I to XII, beginning from the anterior and moving to the posterior of the brain. Each cranial nerve is uniquely identified by names that reflect its function...
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Cranial Nerves: Types Part I01:14

Cranial Nerves: Types Part I

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Cranial nerves are responsible for transmitting motor and sensory information between the brain and various parts of the body. There are twelve pairs of cranial nerves, with the first six being essential in sensory perception, motor control, and autonomic functions related to the head and neck.
Olfactory Nerve (Cranial Nerve I)
The olfactory nerve, or cranial nerve I, is unique as it is purely sensory and dedicated to the sense of smell. This nerve originates in the olfactory epithelium of the...
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Cranial Nerves: Types Part II01:22

Cranial Nerves: Types Part II

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Cranial nerves are responsible for transmitting motor and sensory information between the brain and various parts of the body. There are twelve pairs of cranial nerves. While the first six innervate the head and neck, the latter six nerves innervate the head and neck, as well as organs and tissues in the thoracic and abdominal cavities. They facilitate communication, expression, and autonomic control within the human body.
Facial Nerve (Cranial Nerve VII)
Cranial nerve VII, or the facial nerve,...
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Cranial Part of Parasympathetic Division01:18

Cranial Part of Parasympathetic Division

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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.
The vagus nerve (cranial nerve X) alone accounts for approximately 75...
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Cranial and Spinal Meninges01:19

Cranial and Spinal Meninges

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The cranial and spinal meninges are complex protective structures surrounding the central nervous system (CNS), consisting of the brain and spinal cord. These meninges consist of the dura mater, the arachnoid mater, and the pia mater. They protect the CNS, provide structural support, and aid in circulating cerebrospinal fluid (CSF).
Cranial Meninges
These meningeal layers cover the cranium. The dura mater is the outermost layer of cranial meninges. It is a thick and durable membrane of dense...
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Spinal Nerves: Plexus I01:22

Spinal Nerves: Plexus I

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Nerve plexuses are networks of interlacing nerves that serve as communication hubs to distribute and organize nerve action across various body regions. The nerve plexuses are organized into the cervical plexus located in the neck region, brachial plexus in the shoulder area, lumbar plexus found in the lower back, sacral plexus situated in the pelvis, and coccygeal plexus located in the coccygeal region.
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The cervical plexus, formed by the anterior rami of the first four...
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Updated: Mar 3, 2026

A Model for Perineural Invasion in Head and Neck Squamous Cell Carcinoma
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Carcinoma Prostate Presenting as Multiple Cranial Nerve Palsy.

Krishnan Mugundhan1, K V Arasi2, N Balamurugan3

  • 1Senior Assistant Professor of Neurology.

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Leptomeningeal metastasis from prostate cancer is rare, but can cause cranial nerve palsies. This case highlights the importance of considering this unusual presentation in advanced prostate carcinoma.

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Area of Science:

  • Oncology
  • Neurology
  • Urology

Background:

  • Prostate cancer commonly metastasizes to bone and lymph nodes.
  • Central nervous system (CNS) involvement, specifically leptomeningeal metastasis, is an exceptionally rare complication of advanced prostate carcinoma.

Observation:

  • A 65-year-old male patient with metastatic prostate carcinoma presented with multiple cranial nerve palsies.
  • This presentation was attributed to leptomeningeal metastasis.

Findings:

  • The patient's condition was diagnosed as leptomeningeal metastasis from prostate cancer.
  • Treatment included orchidectomy, with planned radiotherapy and antiandrogen therapy.

Implications:

  • This case underscores the rare but severe neurological complications that can arise from advanced prostate cancer.
  • Highlights the need for vigilance in diagnosing and managing leptomeningeal metastasis in prostate cancer patients.