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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Axial T1W image of right globe. CT or MR evaluation may be useful in posterior uveitis, for assessment of complications including chorioretinal detachment, underlying abscesses or foreign bodies providing a nidus for infection 9. The various pathological processes involving these estaallamiento are highlighted using case examples with fundoscopic correlation where appropriate. Right choroidal detachment is seen limited posteriorly at expected location of vortex vein insertion white arrow estallamiejto extending anterior to ora serrata black arrow.
Histology was consistent with uveal melanoma. Optic nerve is labeled dashed black estalamiento. Anatomy and pathology of the eye: The radiologist has an important role in primary diagnosis contributing to appropriate ophthalmology referral, thereby preventing devastating consequences such as vision loss. Abstract Eye globe abnormalities can be readily detected on dedicated and non-dedicated CT and MR studies. The globe occupies one third of the orbital volume, with the vitreous humour representing two-thirds of the volume of the globe 2.
Condiciones y enfermedades de los ojos
Posteriorly, choroidal detachments are limited by the insertions of the vortex veins; whereas, retinal detachments are limited by the optic disc producing a characteristic Estllamiento shape 1. CT is the technique of choice for evaluating metallic or paramagnetic foreign bodies, whereas MRI is contraindicated due to potential migration and local heating.
The uveal tract consists of the iris, ciliary body and choroid. Considerations include metastases highly likely given clinical history with amelanocytic melanoma no T1W hypointensity; images not shownless likely differential. Uveal Tract Middle Layer The uveal tract consists of the iris, ciliary body and choroid.
Guía de la salud ocular – Enfermedades, problemas y condiciones oculares
Axial non-contrast image from orbital CT study for assessment estllamiento homonymous hemianopia. Review of orbital imaging. Recent advances in MR and CT technology that allows for detailed visualisation of the globe has resulted in frequent, incidental detection of abnormalities.
oocular Other scleral findings include scleral banding for treatment of retinal detachment Figs. Endophthalmitis represents inflammation ocullar infection involving the anterior chamber and vitreous humour.
Non-contrast CT is useful in the initial evaluation of orbital and globe trauma for the assessment of fractures, extra-ocular muscle herniation and suspected globe rupture. Rhegmatogenous detachments are commonly secondary to vitreous degeneration and traction on the retina. Buckling and defect in superior sclera Bwhite arrow with loss of globe volume is consistent with globe rupture.
The differential diagnosis can be made easier and refined by categorising the abnormalities according to the layers and the compartments of the globe. Retina Inner Layer The retina is the innermost sensory layer of the globe and consists of two esatllamiento. Malignant melanoma is most commonly unilateral and may present with pain or decreased visual acuity.
However, characteristic concavity at site of banding is not seen in this case. Normal globe anatomy on orbital MRI. The iris is a pigmented circular structure responsible for controlling the size of the pupil. Scleral bands would appear more linear, as compared to punctate calcifications observed.
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.
No history of trauma or prior ocular inflammation was noted. A primary understanding of the globe anatomy is key to characterising both traumatic and non-traumatic globe abnormalities.
ALVARO LÓPEZ / LUPITA LÓPEZ TORERA
The most common organisms include skin commensals such as staphylococcus epidermis, candida and parasites including cysticercosis and occular. Disruption of the sclera can result from trauma globe rupture Figs. The innermost sensory retina is responsible for estallamienfo perception. Enhancement of detached choroid is also apparent as in Figure Histology following resection of cerebellar lesion confirmed diagnosis of hemangioblastoma.
Bilateral bands of hyperdensity that do not conform to insertions of extra-ocular muscles, are consistent with prior bilateral scleral bands for treatment of retinal detachment. An understanding of the CT attenuation and MRI signal characteristics can also help in characterising the lesions, especially in the case of uveal melanoma. The appearance of melanoma is non-uniform on imaging due to the varying levels of melanin.
Breast and lung are the most common primary neoplasms leading to metastases. CT is also estallamientp for evaluation of globe calcifications, especially in the case of retinoblastoma 1. Bilateral episcleral fluid collections white asterisks with distortion of globes are likely due to scleral degeneration or necrosis.
corrida toreador – ZICC
Despite aggressive therapy, the outcome remains poor resulting in pthisis bulbi and visual loss. Abnormalities of the globe. Uveitis Inflammation of the uveal tract commonly involves the adjacent retina and sclera Fig.
T1W images are useful to distinguish metastases from melanocytic melanoma with the exception of hyperintense hemorrhagic or mucinous adenocarcinomas 6. Lens black arrow and sclera white arrow show hypointense esallamiento on all sequences. Axial non-contrast image from brain CT for assessment of direct globe injury shows left globe rupture with complete loss of normal scleral contour, vitreous hemorrhage and surrounding periorbital and episcleral hematomas.
Estallzmiento articles by Lilian Hui Li Koh. In old age, the vitreous may shrink and form clumps estallamient to ‘floaters’. Ocular Neoplasms Malignant melanoma represents the most common intraocular malignancy in adults and occurs in the pigmented uveal tract 3. The outermost fibrous coat constitutes the sclera and cornea. Episcleritis is typically a self-limiting idiopathic disorder; whereas, scleritis is a more serious rstallamiento associated with connective tissue diseases such as rheumatoid arthritis.
Choroidal black arrow and retinal dashed black arrow detachment is seen in left globe with underlying subchoroidal and subretinal fluid, respectively.