Computed Tomography Angiography of Bilateral Intracavernous Internal Carotid Artery Aneurysms

Ayman G Elnahry1, Gehad A Elnahry1

  • 1Department of Ophthalmology, Faculty of Medicine, Cairo University, Cairo, Egypt.

Insights

Bilateral intracavernous internal carotid artery aneurysms are rare, particularly in women. Computed tomography angiography revealed these aneurysms in an 81-year-old hypertensive female presenting with cranial nerve palsies.

Area of Science:

  • Neurology
  • Vascular Surgery
  • Radiology

Background:

  • Bilateral intracavernous internal carotid artery aneurysms are uncommon vascular lesions.
  • These aneurysms are more prevalent in elderly females and often linked to hypertension.
  • Cranial nerve palsies can be a presenting symptom of these aneurysms.

Purpose of the Study:

  • To report the computed tomography angiography findings in a case of bilateral intracavernous internal carotid artery aneurysms.
  • To highlight the association between these aneurysms and neurological deficits.

Main Methods:

  • A case study of an 81-year-old female patient.
  • Clinical examination including assessment of ocular motor function.
  • Computed tomography angiography (CTA) for vascular imaging.

Main Results:

  • The patient presented with headache, diplopia, and bilateral sixth nerve palsy with left third nerve palsy.
  • CTA confirmed the presence of bilateral intracavernous internal carotid artery aneurysms.
  • External ocular examination findings were unremarkable.

Conclusions:

  • Bilateral intracavernous internal carotid artery aneurysms can manifest with significant neurological symptoms, including multiple cranial nerve palsies.
  • CTA is an effective imaging modality for diagnosing these rare aneurysms.
  • Prompt neurosurgical consultation is essential for appropriate management of such cases.

Related Concept Videos

Computed Tomography01:10

Computed Tomography

Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
8.3K
Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
368
Internal Energy02:00

Internal Energy

The total of all possible kinds of energy present in a substance is called the internal energy (U), sometimes symbolized as E. Suppose a system with initial internal energy, Uinitial, undergoes a change in energy (transfer of work or heat), and the final internal energy of the system is Ufinal. Change in internal energy equals the difference between Ufinal and Uinitial.
36.8K
Internal Energy01:29

Internal Energy

The internal energy of a thermodynamic system is the sum of the kinetic and potential energies of all the molecules or entities in the system. The kinetic energy of an individual molecule includes contributions due to its rotation and vibration, as well as its translational energy. The potential energy is associated only with the interactions between one molecule and the other molecules of the system. Neither the system's location nor its motion is of any consequence as far as the internal...
7.0K
Internal Receptors01:31

Internal Receptors

Many cellular signals are hydrophilic and therefore cannot pass through the plasma membrane. However, small or hydrophobic signaling molecules can cross the hydrophobic core of the plasma membrane and bind to internal, or intracellular, receptors that reside within the cell. Many mammalian steroid hormones use this mechanism of cell signaling, as does nitric oxide (NO) gas.
74.7K
Aneurysm I: Introduction01:30

Aneurysm I: Introduction

An aortic aneurysm is a localized outpouching or dilation at a weak point in the artery wall. It may involve different parts of the aorta, such as the abdominal aorta, aortic arch, or thoracic aorta.Etiological factorsSeveral disorders are associated with aortic aneurysms.Congenital causes, such as primary connective tissue disorders like Marfan syndrome, impact the integrity and strength of connective tissues, notably affecting the aorta. Marfan syndrome is a genetic disorder that specifically...
414