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Related Concept Videos

Degenerative Disc Disease ll: Pathophysiology01:23

Degenerative Disc Disease ll: Pathophysiology

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The symptoms of degenerative disc disease arise from a combination of mechanical compression, vascular compromise, and biochemical inflammation, which together disrupt nerve function and produce pain.Mechanical CompressionDisc degeneration reduces height and elasticity, predisposing to herniation of the nucleus pulposus, a major cause of radicular pain. Herniations may be protrusion (bulging with intact annulus), extrusion (nucleus extends beyond disc but remains connected), or sequestration...
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Herniated Intervertebral Disc l: Introduction01:29

Herniated Intervertebral Disc l: Introduction

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Intervertebral disc herniation refers to the displacement of the nucleus pulposus (the gel-like inner core of the disc) through a tear or weakened area in the annulus fibrosus (the outer fibrous ring). The displaced disc material extends beyond the normal boundaries of the disc space and may compress or irritate nearby spinal nerve roots or, less commonly, the spinal cord.Etiology and Risk FactorsHerniation commonly results from degeneration, in which aging reduces disc hydration and...
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Degenerative Disc Disease I: Introduction01:27

Degenerative Disc Disease I: Introduction

29
Degenerative disc disease is a chronic condition in which intervertebral discs gradually lose structure and function. It is not infectious or autoimmune; rather, it results from age-related biochemical and mechanical changes, influenced by genetic, metabolic, and environmental factors.Structure and Function of DiscsThe spine contains 23 intervertebral discs that absorb load, distribute forces, maintain spacing, and allow flexibility. Each disc consists of a nucleus pulposus, a gel-like core...
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Diverticular Disease of the Colon01:27

Diverticular Disease of the Colon

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Diverticular disease involves the formation of diverticula—small sac-like outpouchings of the colonic wall—and their complications. It most commonly affects the sigmoid colon due to higher intraluminal pressure and structural vulnerability. It results from structural weakness and increased pressure in the colon, producing pseudodiverticula that may remain silent or progress to inflammation and serious complications.Structure of DiverticulaIn diverticulosis, these outpouchings are...
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Related Experiment Video

Updated: May 3, 2026

Author Spotlight: Development and Application of a Novel Suture Technique for Annular Fibrosus Repair in Percutaneous Transforaminal Endoscopic Discectomy
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Radiculopathy caused by discal cyst.

Sae Young Kim1

  • 1Department of Anesthesiology and Pain Medicine, Keimyung University School of Medicine, Daegu, Korea.

The Korean Journal of Pain
|January 31, 2014
PubMed
Summary
This summary is machine-generated.

A rare discal cyst caused L5 radiculopathy by communicating with lumbar intervertebral discs. Selective transforaminal epidural blocks effectively relieved the patient's radiating pain.

Keywords:
epiduralinjectionsintervertebral disc displacementradiculopathyspine

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Area of Science:

  • Neurosurgery
  • Radiology
  • Pain Management

Background:

  • Discal cysts are rare intraspinal cysts.
  • They communicate with intervertebral discs.
  • Symptoms can mimic lumbar disc herniation, causing radiculopathy.

Purpose of the Study:

  • To present a case of a large discal cyst causing L5 radiculopathy.
  • To describe the communication between the cyst and adjacent intervertebral discs.
  • To report the successful management of radicular pain using epidural blocks.

Main Methods:

  • Case report of a patient with a large ventrolateral epidural discal cyst at the L5 level.
  • Diagnostic imaging to confirm cyst communication with L4-L5 and L5-S1 intervertebral discs.
  • Treatment with selective transforaminal epidural blocks for pain relief.

Main Results:

  • A large discal cyst was identified in the L5 ventrolateral epidural space.
  • The cyst communicated with the L4-L5 and L5-S1 intervertebral discs.
  • The patient experienced significant alleviation of L5 radiculopathy symptoms following epidural injections.

Conclusions:

  • Discal cysts are an important differential diagnosis for lumbar radiculopathy.
  • Selective transforaminal epidural blocks can be an effective treatment for discal cyst-induced radiculopathy.
  • This case highlights the successful non-surgical management of a symptomatic discal cyst.