Items tagged “orbit”

101 results found
Article

Abducens nerve

The abducens nerve is the sixth cranial nerve. It courses from its nucleus located in the dorsal pons to its innervation of the lateral rectus muscle and can be divided into four parts: nucleus and intraparenchymal portion cisternal portion cavernous sinus portion orbital portion Gross anat...
Article

Capillary hemangioma of the orbit

Capillary hemangiomas of the orbit, also known as strawberry hemangiomas, on account of its coloring, or orbital infantile hemangiomas, are the most common orbital tumors of infancy, and unlike orbital cavernous hemangiomas, they are neoplasms rather than vascular malformations. Clinical presen...
Article

Idiopathic orbital inflammation

Idiopathic orbital inflammation (IOI), also known as orbital pseudotumour and nonspecific orbital inflammation, is an idiopathic inflammatory condition that most commonly involves the extraocular muscles. Less commonly there is inflammatory change involving the uvea, sclera, lacrimal gland, and ...
Article

Phthisis bulbi

Phthisis bulbi, also known as end-stage eye, is an atrophic scarred and disorganized globe that may result from a variety of severe ocular insults.  Pathology The globe is reduced in size (usually <20 mm) with a thickened/folded posterior sclera. Dystrophic calcification is common, and osseous...
Article

Retinoblastoma

Retinoblastomas are the most common intraocular neoplasm found in childhood, and with modern treatment modalities are, in most cases, curable. On imaging, they are generally characterized by a heterogeneous retinal mass with calcifications, necrotic components, and increased vascularization on ...
Case

Erdheim-Chester disease

 Diagnosis almost certain
A.Prof Frank Gaillard
Published 07 May 2008
62% complete
MRI
Case

Caroticocavernous fistula (indirect)

 Diagnosis certain
A.Prof Frank Gaillard
Published 18 Jul 2008
65% complete
DSA (angiography)CT
Case

Orbital metastases: breast cancer

 Diagnosis almost certain
A.Prof Frank Gaillard
Published 08 Oct 2008
59% complete
CT
Article

Orbital mass

An orbital mass carries a relatively wide differential: tumors lymphoma metastasis lacrimal gland or duct tumors rhabdomyosarcoma of the orbit retinoblastoma optic nerve meningioma optic nerve glioma optic nerve schwannoma  neurofibroma developmental orbital cysts 3: choristoma epid...
Article

Ophthalmic artery

The ophthalmic artery is a branch of the C6 segment of the internal carotid artery (ICA). Gross anatomy Origin The ophthalmic artery arises medial to the anterior clinoid process as the ICA exits the cavernous sinus. It originates from the antero- or supero-medial surface of the ICA. Course ...
Case

Orbital varix

 Diagnosis almost certain
A.Prof Frank Gaillard
Published 27 Oct 2008
74% complete
CT
Article

Orbital venous varix

Orbital venous varix (OVV) is an uncommon vascular malformation which is composed of enlarged single or multiple tubular venous channels with direct communication to the systemic venous system.  Terminology Orbital venous varices are divided into primary and secondary. Primary orbital varices ...
Case

Thyroid orbitopathy

 Diagnosis almost certain
A.Prof Frank Gaillard
Published 16 Dec 2008
62% complete
CT
Case

Enophthalmos due to anorexia nervosa

 Diagnosis almost certain
A.Prof Frank Gaillard
Published 02 Jan 2009
62% complete
CT
Case

Orbital cavernous hemangioma - extra conal

Orbital Haemangio...
 Diagnosis certain
A.Prof Frank Gaillard
Published 06 Jan 2009
77% complete
MRI
Case

Ruptured globe

 Diagnosis certain
A.Prof Frank Gaillard
Published 06 Jan 2009
68% complete
CT
Case

Orbital abscess: lacrimal gland

 Diagnosis almost certain
A.Prof Frank Gaillard
Published 27 Jan 2009
56% complete
CT
Case

Multiple myeloma - orbit

 Diagnosis certain
A.Prof Frank Gaillard
Published 15 Apr 2009
80% complete
CT
Article

Trilateral retinoblastoma

Trilateral retinoblastoma refers to the combination of retinoblastoma (usually bilateral) and pineoblastoma. This relationship highlights the close relationship between these highly aggressive small round blue cell tumors. It affects only a minority of patients with retinoblastoma (1.5-5%) and ...
Article

Optic pathway glioma

Optic pathway gliomas are relatively uncommon tumors, with a variable clinical course and usually seen in the setting of neurofibromatosis type I (NF1). Histologically the majority are pilocytic astrocytomas.  They are characterized by imaging by an enlarged optic nerve seen either on CT or MRI...

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