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Related Concept Videos

Nose and Nasal Cavity01:24

Nose and Nasal Cavity

The nose is composed of an observable exterior segment (external nose) and an internal segment within the skull known as the nasal cavity (internal nose). The external nose, visible on the face, consists of a framework of bone and hyaline cartilage enveloped in skin and muscle and lined with a mucous membrane. This structure is supported by the frontal bone, nasal bones, and maxillary bone and is supplemented by a cartilaginous framework comprising the septal nasal cartilage, lateral nasal...
Cranial Bones: Lateral View01:27

Cranial Bones: Lateral View

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...
Anatomy of Respiratory System I: Upper Respiratory Tract01:29

Anatomy of Respiratory System I: Upper Respiratory Tract

The upper respiratory tract plays a vital role in the respiratory system, comprising several structures that facilitate air intake and prepare air for the lungs. It also serves as the first line of defense against pathogens and particles. This tract includes the nose and nasal cavity, the oral cavity, the paranasal sinuses, and the pharynx, each with specific functions and features.
Nose and nasal cavity
The nose and nasal cavity represent the main external openings of the respiratory tract.
Epistaxis01:30

Epistaxis

Epistaxis, or nosebleeds, occurs when small, swollen blood vessels in the nasal mucous membrane rupture. Typically, the anterior septum is the primary site of occurrence.
Etiology
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Viral Meningitis01:18

Viral Meningitis

Viral meningitis is the most common form of meningitis and is often referred to as aseptic meningitis to indicate the absence of bacterial involvement. It is generally milder than bacterial meningitis, with symptoms including fever, headache, stiff neck, drowsiness, nausea, photophobia, and vomiting. Rarely, more severe manifestations or death may occur. Common causative agents include enteroviruses, particularly coxsackie A and B viruses and echoviruses, all members of the Enterovirus genus...
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Suctioning the Nasopharyngeal Airway

Nasopharyngeal suctioning is a procedure to remove secretions from the upper part of the respiratory tract that the patient cannot clear independently. It helps maintain airway patency and prevents complications such as aspiration pneumonia.
Equipment Required

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Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
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Paranasal sinus mucocele.

Gregory G Capra1, Peter N Carbone, David P Mullin

  • 1Department of Otolaryngology, Naval Medical Center San Diego, San Diego, CA 92134-5000, USA. gregory.capra@med.navy.mil

Head and Neck Pathology
|May 25, 2012
PubMed
Summary
This summary is machine-generated.

Paranasal sinus mucoceles are cystic masses causing symptoms by blocking sinus openings. Surgical removal, often endoscopically, is the primary treatment for these growths.

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Area of Science:

  • Otolaryngology
  • Neurosurgery
  • Radiology

Background:

  • Paranasal sinus mucoceles arise from blocked sinus ostia, commonly affecting frontal and ethmoid sinuses.
  • These cysts can cause ophthalmologic, rhinologic, and neurological symptoms due to their proximity to critical structures.

Observation:

  • Imaging reveals homogenous masses that expand bony walls on CT, with variable T1 and hyperintense T2 signal on MRI.
  • Histopathology shows respiratory mucosa with reactive bone, hemorrhage, fibrosis, and granulation tissue.

Findings:

  • Paranasal sinus mucoceles present with a range of symptoms, most commonly ophthalmologic.
  • The close anatomical relationship to the orbit and skull base leads to potential significant morbidity.

Implications:

  • Accurate diagnosis via CT and MRI is crucial for surgical planning.
  • Endoscopic surgical excision is the current standard treatment, offering a minimally invasive approach.