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Related Concept Videos

Cranial Bones: Lateral View01:27

Cranial Bones: Lateral View

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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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Cranial Bones: Superior and Posterior View01:14

Cranial Bones: Superior and Posterior View

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The superior view of the cranium shows the frontal and paired parietal bones.
The frontal bone is the single bone that forms the forehead. At its anterior midline, between the eyebrows, there is a slight depression called the glabella. The frontal bone also forms the supraorbital margin of the orbit. Near the middle of this margin is the supraorbital foramen, the opening that provides passage for a sensory nerve to the forehead. The frontal bone is thickened just above each supraorbital margin,...
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Overview of the Skull01:08

Overview of the Skull

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The cranium (skull) is the skeletal structure of the head that supports the face and protects the brain. It is subdivided into the facial bones and the brain case, or cranial vault. The facial bones underlie the facial structures, form the nasal cavity, enclose the eyeballs, and support the teeth of the upper and lower jaws.
The cranial vault surrounds and protects the brain and houses the middle and inner ear structures. This cavity is bounded superiorly by the rounded top of the skull, which...
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Nose and Nasal Cavity01:24

Nose and Nasal Cavity

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

Anatomy of Respiratory System I: Upper Respiratory Tract

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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....
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Sutures of the Skull01:22

Sutures of the Skull

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The human skull is composed of several bones that come together to protect the brain and support the structures of the face. The junctions where these bones meet are called sutures.
Sutures are immobile joints between adjacent bones of the skull. The narrow gap between the bones is filled with dense, fibrous connective tissue that unites the bones. The long sutures located between the skull bones are not straight but instead follow irregular, tightly twisting paths. These twisting lines tightly...
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Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
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Sphenoid sinus types, dimensions and relationship with surrounding structures.

Nikola Štoković1, Vladimir Trkulja2, Ivo Dumić-Čule1

  • 1Laboratory for Mineralized Tissues, Center for Translational and Clinical Research, School of Medicine, University of Zagreb, Šalata 11, 10000 Zagreb, Croatia.

Annals of Anatomy = Anatomischer Anzeiger : Official Organ of the Anatomische Gesellschaft
|April 7, 2015
PubMed
Summary

The sphenoid sinus

Keywords:
Anatomical variationCBCTHypophyseal surgeryNeurovascular protrusionPneumatizationSphenoid sinus

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Area of Science:

  • Anatomy
  • Radiology
  • Neurosurgery

Background:

  • The sphenoid sinus is a variable anatomical structure crucial for hypophyseal surgery.
  • Understanding its pneumatization patterns is vital for surgical safety.

Purpose of the Study:

  • To investigate the relationship between sphenoid sinus type, size, and pneumatization extent.
  • To assess the occurrence of neurovascular structure protrusions based on sinus morphology.

Main Methods:

  • Analysis of 51 randomly selected adult skulls (102 sinuses) using cone beam computed tomography.
  • Evaluation of pneumatization extension beyond the sphenoid body and adjacent neurovascular structures.

Main Results:

  • Significant variability in pneumatization type between left and right sinuses (45%).
  • Prevalence of conchal (2%), presellar (24%), sellar (41%), and postsellar (33%) types.
  • Postsellar and sellar types showed increased neurovascular protrusions, with size correlating for sellar types.

Conclusions:

  • Sphenoid sinus pneumatization type and dimensions are linked to neurovascular structure interactions.
  • These findings can help estimate risks of iatrogenic injury during transsphenoidal surgery.