orbita, globo ocular, la conjuntiva capsula de tenon paredes orbitarias: superior ( techo): formada por el hueso frontal en su profundidad el ala menos del. Non-contrast CT is useful in the initial evaluation of orbital and globe trauma for the assessment of fractures, extra-ocular muscle herniation and. Aug 30, · “El torero Juan José Padilla sufre estallamiento de glóbulo ocular por cornada” EfektoTV Deportes: – Duration: Efekto Televisión 1,,
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Dedicated orbital MRI study for gradual left visual loss. Scleral band for treatment of retinal detachment is seen on right black arrows. Other globe shape abnormalities include colobomas congenital defects in the layers of the globe including the optic disc and phthisis bulbi representing an end-stage estallaiento globe Figs. Abnormalities of estallamienti globe. The differential diagnosis can be made easier and refined by categorising the abnormalities according to the layers and the compartments of the globe.
Axial non-contrast image from orbital CT study for assessment of homonymous hemianopia. Enhancing lesion is observed in region of fourth ventricle complicated by hydrocephalus not shown.
Amelanotic tumors have a similar appearance to other neoplasms on MRI. Vascular lesions of the orbit: Inflammation of the uveal tract commonly involves the adjacent retina and sclera Fig. Male primary lung adenocarcinoma patient presenting with left sided blindness. It is often idiopathic in nature, although numerous infective and inflammatory causes are described including estallaiento tissue diseases such as sarcoidosis and toxoplasmosis.
An understanding of the CT attenuation and MRI signal characteristics can also help in characterising the lesions, especially in the case of uveal melanoma. A primary understanding of the globe anatomy is key to characterising both traumatic and non-traumatic globe abnormalities.
Recent advances in MR and CT technology that allows for detailed visualisation of the globe has resulted in frequent, incidental detection of abnormalities. Axial T1WI shows lobulated hyperintense lesion arising in anteromedial left globe with endophytic extension into vitreous.
Episcleritis is typically a self-limiting idiopathic disorder; whereas, scleritis is a more serious condition associated with connective tissue diseases such as rheumatoid arthritis. Other globe neoplasms also predominantly involve the highly vascular uveal tract and include metastases commonly breast and lungbenign neoplasms such as hemangiomas, and inflammatory processes such as sarcoidosis 6.
Right-sided lens prosthesis is noted.
The sclera is enveloped by the estqllamiento Tenon’s capsule, which fuses with the bulbar conjunctiva and is perforated posteriorly by the optic nerve estllamiento. In old age, the vitreous may shrink and form clumps leading to ‘floaters’.
Knowledge of the imaging features of both traumatic and non-traumatic globe abnormalities is necessary to ensure appropriate ophthalmology referral and accurate diagnosis. CT and MRI may demonstrate uveal thickening and enhancement, chrorioretinal or vitreous detachment and increased density or T1W hyperintensity of the vitreous due to proteinaceous exudates 2.
Dedicated orbital MRI scans 1. Malignant Melanoma Malignant melanoma is most commonly unilateral and may present with pain or decreased visual acuity. Scleral bands would appear more linear, as compared to punctate calcifications observed. Ocular Metastases The vascular uveal tract is the most common site for hematogenously disseminated metastases within the globe Fig.
Sustained intraocular pressure in childhood can lead to diffuse enlargement of the globe buphthalmos ; where as in adults, the more rigid sclera results in focal protrusions staphylomasespecially in myopia Fig. The technique is limited by lengthy scanning time, increased cost compared to CT, and requirements for sedation in children and other non-compliant patient groups. Lens The lens forms the posterior boundary of the anterior chamber and is attached to the ciliary body via the zonular fibers.
Other scleral findings include scleral banding for treatment of retinal detachment Figs.
ALVARO LÓPEZ / LUPITA LÓPEZ TORERA
Additional avidly enhancing lesion is seen arising from lateral choroid of left globe without associated chorioretinal detachment. Published online Aug Find articles by Kong Yong Goh.
Endophthalmitis Endophthalmitis represents inflammation or infection involving the anterior chamber and vitreous humour. Eye, orbit and visual system.
Traumatismo ocular – Wikipedia, la enciclopedia libre
The wall of the globe comprises three layers Fig. Lens black arrow and sclera white arrow show hypointense signal on all sequences.
Journal List Korean J Radiol v. No history of trauma was noted. Magnetic resonance imaging of the brain and spine. Retinal detachments can be treated using scleral bands Figs.
On MR and CT, posterior vitreous detachment appears as a membrane within the vitreous cavity detached from the optic disc and attached at the ora serrata. Ciliary bodies estal,amiento part of choroid dashed white arrows, B, C. Endophthalmitis represents inflammation or infection involving the anterior chamber and vitreous humour. Hypointense material in vitreous is suggestive of hemorrhage.
Underlying Von Hippel-Lindau disease was key consideration.