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Related Concept Videos

Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

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Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
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Computed Tomography (CT) scan:
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Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
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Patient-Specific Polyvinyl Alcohol Phantom Fabrication with Ultrasound and X-Ray Contrast for Brain Tumor Surgery Planning
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Floating labyrinth: A unique finding on CT scan.

Filipe Correia1,2, Rita Sousa1,2, Jorge Domingues1,2

  • 1Serviço de Otorrinolaringologia, Hospital de Egas Moniz, Centro Hospitalar de Lisboa Ocidental, Rua da Junqueira 126 1349-019, Lisboa, Portugal.

Radiology Case Reports
|September 18, 2020
PubMed
Summary
This summary is machine-generated.

A rare "floating labyrinth" sign on CT scans indicates severe otitis media in an AIDS patient. This finding highlights the need to suspect immunosuppression in unusual ear infections.

Keywords:
AIDSBony sequestrumCT scanChronic suppurative otitis mediaFloating labyrinthLabyrinthitis

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Area of Science:

  • Otolaryngology
  • Infectious Diseases
  • Radiology

Background:

  • Chronic suppurative otitis media (CSOM) can present with atypical features, especially in immunocompromised individuals.
  • Facial paralysis and hearing loss are significant symptoms requiring prompt investigation.

Observation:

  • A unique CT finding of a "floating labyrinth" was observed, where the inner ear structures were surrounded by soft tissue but the otic capsule remained intact.
  • The patient presented with complete right facial paralysis, progressive hearing loss, and chronic otorrhea.

Findings:

  • A transotic approach revealed noncholesteatomatous inflammatory tissue, likely caused by chronic suppurative otitis media with necrotic osteomyelitis and bony sequestrum.
  • The patient had a severe context of Acquired Immunodeficiency Syndrome (AIDS).

Implications:

  • This case underscores the importance of considering immunosuppressive diseases, such as AIDS, in patients with atypical presentations of CSOM.
  • Early recognition and management of such conditions are crucial for preventing severe complications and improving patient outcomes.