Items tagged “orbit”
122 results found
Case
Graves disease - goiter and thyroid eye disease
Published
25 Feb 2016
95% complete
Pathology
Ultrasound
CT
Nuclear medicine
Article
Subconjunctival fat prolapse
Subconjunctival fat prolapse is an acquired herniation of intraconal fat due to the weakening of the Tenon capsule by normal aging, surgery, or trauma. It presents clinically with a fat-containing epibulbar mass in the lateral canthal area.
Epidemiology
Subconjunctival fat prolapse occurs mai...
Case
Choroidal nevus
Published
27 May 2016
72% complete
Ultrasound
Case
Superior ophthalmic vein thrombosis
Published
29 Jun 2016
98% complete
Annotated image
MRI
Article
Trochlear apparatus calcification
Trochlear apparatus calcification in the orbit is a common incidental finding on CT of the head, found in ~12.5% of patients. Some studies have suggested an association with diabetes mellitus in younger patients 3. An association has also been demonstrated with autoimmune disease and elevated AL...
Article
Lacrimal bone
The lacrimal bones are paired craniofacial bones forming the anterior aspect of the medial orbital walls.
Gross anatomy
The lacrimal bones have two surfaces and four borders. The lateral orbital surface is divided by a vertical posterior lacrimal crest with an anterior fossa for lacrimal sac ...
Article
Nasolacrimal tumors
Nasolacrimal tumors, in other words, tumors involving the nasolacrimal drainage apparatus are uncommon and have a variety of histologies. They are a more common cause of a lacrimal sac mass than an inflammatory cause.
Clinical presentation
Clinical presentation of nasolacrimal tumors are typi...
Case
Orbital plexiform neurofibromata
Published
30 Aug 2016
77% complete
MRI
Case
Thyroid eye disease
Published
05 Oct 2016
89% complete
CT
Case
Lamina papyracea dehiscence
Published
27 Oct 2016
74% complete
CT
Article
Subperiosteal abscess of the orbit
Subperiosteal abscess of the orbit occurs as a complication of acute sinusitis.
Clinical presentation
Patients can present with pain, visual disturbance, proptosis and/or chemosis.
Pathology
Bacteria can extend via neurovascular foramina or bony dehiscences. More commonly occurs from ethmoid...
Case
Scleral buckle surgery
Published
19 Jan 2017
86% complete
CT
Case
Orbital blow-out and occipital condylar fracture
Published
13 Feb 2017
80% complete
CT
Article
Extraconal orbital compartment
The extraconal orbital compartment or extraconal space is the space within the orbit outside the musculofascial cone. The base of which is anterior and is formed by the orbital septum that surrounds the equator of the globe. The external sides are formed by the bones of the orbit and their perio...
Case
Ethmoid mucocele
Published
07 Jul 2017
74% complete
MRI
Article
Myofascial cone
The myofascial cone is a structure within the orbit involved in the movement and support of the globe, or more simply the eye. It also serves as the physical division between the intraconal and extraconal compartments, but the cone itself is included in the contents of the intraconal space 1.
...
Case
Myositic orbital pseudotumor
Published
27 Nov 2017
82% complete
MRI
CT
Case
Thyroid-associated orbitopathy
Published
08 Dec 2017
77% complete
CT
Article
Brown syndrome (orbit)
Brown syndrome refers to a failure of upward gaze while the eye is adducted secondary to an abnormality of the superior oblique tendon sheath complex.
Pathology
This abnormality is a little counter-intuitive and highlights how the action of the superior oblique is position-dependent and that e...
Case
Internal angular dermoid cyst
Published
20 Jan 2019
74% complete
CT
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