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 non-contrast image from orbital CT study for assessment of homonymous hemianopia. The innermost sensory retina is responsible for visual perception. Open in a separate window.
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. 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 atrophic globe Figs.
Malignant melanoma is most commonly unilateral and may present with pain or decreased visual acuity. Approximate position of ora serrata is shown small white arrowheads.
Capillary hemangiomas of the retina occur in a quarter to half of patients with Von Hippel-Lindau syndrome and are histologically similar to the associated cerebellar hemangioblastoma Fig.
Imaging of orbital trauma. No choroidal detachment is detected. Ciliary bodies form part of choroid dashed white arrows, B, C. Rhegmatogenous detachments are commonly secondary to vitreous degeneration and traction on the retina.
Traumatismo ocular – Wikipedia, la enciclopedia libre
Axial T1WI shows lobulated hyperintense lesion arising in anteromedial left globe with endophytic extension into vitreous. Enhancement of detached choroid is also apparent as in Figure Magnetic resonance imaging of the brain and spine. Underlying Von Hippel-Lindau disease was key consideration.
High-resolution MRI facilitates evaluation of chorioretinal detachments and potential underlying neoplasms. 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. Episcleritis is typically a self-limiting idiopathic disorder; whereas, scleritis is a more serious condition associated with connective tissue diseases such as rheumatoid arthritis. Axial non-contrast image from brain CT assessment of altered mental state shows right phthisis bulbi with irregular, scarred, shrunken right globe and dense internal calcification.
Breast and lung are the most common primary neoplasms leading to metastases. In addition, knowledge of incidental degenerative changes, globe implants and fillers is important to prevent unnecessary work-up. Axial non-contrast image from brain CT assessment of traumatic head injury shows left phthisis bulbi with irregular, scarred, shrunken globe and left optic disc calcification.
CT is also useful for evaluation of globe calcifications, especially in the case of retinoblastoma 1. Lens The lens forms the posterior boundary of the anterior chamber and is attached to the ciliary body via the zonular fibers. Axial non-contrast image from brain CT assessment of altered mental state shows bilateral lens prostheses with incidental scleral calcifications at insertion of medial rectus on right and both medial and lateral recti on left.
Malignant melanoma represents the most common intraocular malignancy in adults and occurs in the pigmented uveal tract 3.
ALVARO LÓPEZ / LUPITA LÓPEZ TORERA
The lens forms the posterior boundary of the anterior chamber and is attached to the ciliary body via the zonular fibers. Axial T1W image of right globe. Axial T2W image from orbital MRI study for evaluation of left visual loss shows left sided lens dislocation lens luxation with hypointense lens lying dependently adjacent to retina in posterior vitreous humour.
Neuroimaging Clin N Estallamienyo.
Eye Globe Abnormalities on MR and CT in Adults: An Anatomical Approach
The distinction between choroidal and retinal detachment is not always possible with MRI despite several known patterns.
The appearance of melanoma is non-uniform on imaging due to the varying levels of melanin. Find articles by Lilian Hui Li Koh.
Likewise, enhancing lesion suggestive of neoplastic cause is absent. 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 estallamienho. Right choroidal detachment is seen limited posteriorly at expected location of vortex vein insertion white arrow and extending anterior to ora serrata black arrow.
The most common organisms include skin commensals such as staphylococcus epidermis, candida and parasites including cysticercosis and toxocariasis. Corresponding photograph shows pigmented lesion arising from inferomedial globe wall with surrounding hemorrhage.
Effusions due to infection or inflammation of adjacent structures, traumatic hemorrhage and neoplasms including metastases can distend the episcleral space Figs. Uveal melanomas are much less common than the cutaneous form.
Eye globe abnormalities can be readily detected on dedicated and non-dedicated CT and MR studies. It is also composed of collagen, appearing hypointense on MRI and measuring up to 1 mm in thickness. Amelanotic tumors have a similar appearance to other neoplasms on MRI.
Histology following resection of cerebellar lesion confirmed diagnosis of hemangioblastoma.
Guía de la salud ocular – Enfermedades, problemas y condiciones oculares
Vascular lesions of the orbit: T1W images are useful to distinguish metastases from melanocytic melanoma with the exception of hyperintense hemorrhagic or mucinous adenocarcinomas 6. Understanding the anatomy is a key component in the structured approach to a differential diagnosis. Optic nerve is labeled dashed black arrow.