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What is Intraconal and Extraconal?

What is Intraconal and Extraconal?

The intraconal compartment contains the globe, the optic nerve-sheath complex, orbital vessels. and nerves (Fig. 1). The extraconal compartment consists of the bony orbital walls, fat. and the lacrimal gland.

What is Intraconal?

The intraconal orbital compartment or intraconal space is the conical space within the orbit and musculofascial cone, the base of which is anterior and is formed by the posterior half of the globe.

What is the most common malignancy of the orbit?

Breast cancer is the most common malignancy to metastasize to the orbit, followed by prostate cancer, melanoma, and lung cancer. In women with bilateral enophthalmos, metastatic scirrhous breast cancer should be considered in the differential diagnosis.

What is Retrobulbar mass?

In mass lesions situated behind the optic globe the intracranial approach remains the method of choice. In tumors of the optic nerve, the transcranial approach is the only way to manage the possible intracranial extension of the tumor.

How common are orbital tumors?

Introduction to Orbital Tumors Fortunately, malignant tumors of the orbit are unusual. Neoplasms account for approximately 20% to 25% of orbital disease and are more common in the seventh decade and afterward. In most cases, they come from adjacent sinuses or from the overlying skin.

How are orbital tumors diagnosed?

As with most brain tumors, imaging studies are essential to diagnosis of tumors of the orbit. Both magnetic resonance imaging (MRI) and computed tomography (CT) scans can be used. In general, MRI scans are preferred because they provide clear images of the structures within the orbit.

What is lamina Papyracea?

The lamina papyracea, also known as the orbital lamina of the ethmoid bone, is the principal component of the medial wall of the orbit, and also the lateral surface of the ethmoid air cells.

What does a orbital tumor look like?

Most patients with orbital tumors notice a bulging of the eye or proptosis. But usually before the eye starts to bulge, changes in vision, double vision, or pain can be a presenting sign of an orbital tumor.

What are the symptoms of a tumor behind the eye?

Tumors may form in the eye or around the eye, including behind the eye….Some of the most common symptoms include:

  • Bulging of the eye, usually without pain.
  • Swelling of the eye.
  • Changes in vision or vision loss.
  • Eye redness.
  • Burning or itching in the eye.
  • The feeling that something is in the eye.

What could a mass behind the eye be?

Tumors in the eye usually are secondary tumors caused by cancers that have spread from other parts of the body, especially the breast, lung, bowel or prostate. Two types of primary tumors arise within the eye itself and are known as retinoblastoma in children and melanoma in adults.