ESTALLAMIENTO OCULAR PDF

Male primary lung adenocarcinoma patient presenting with left sided blindness. The innermost sensory retina is responsible for visual perception. Considerations include metastases highly likely given clinical history with amelanocytic melanoma no T1W hypointensity; images not shownless likely differential. Ocular Neoplasms Malignant melanoma represents the most common intraocular malignancy in adults and occurs in the pigmented uveal tract 3. Breast and lung are the most common primary neoplasms leading to metastases. The appearance of melanoma is non-uniform on imaging due to the varying levels of melanin.

Author:Gushicage Toshicage
Country:Pakistan
Language:English (Spanish)
Genre:Art
Published (Last):24 April 2015
Pages:381
PDF File Size:12.29 Mb
ePub File Size:1.87 Mb
ISBN:302-2-33741-285-1
Downloads:8566
Price:Free* [*Free Regsitration Required]
Uploader:Mauzshura



Mirg corrida toreador Inflammation of the uveal tract commonly involves the adjacent retina and sclera Fig.

Endophthalmitis Endophthalmitis represents inflammation or infection involving the anterior chamber and vitreous humour. 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. Ciliary bodies form part of choroid dashed white arrows, B, C.

The vascular uveal tract is the most common site for hematogenously disseminated metastases within the globe Fig. Coronal non-contrast ocuoar from brain CT assessment of frequent falls.

Lens The lens forms the posterior boundary of the anterior chamber and is attached to the ciliary body via the zonular fibers. Abstract Eye globe abnormalities can be readily detected on dedicated and non-dedicated CT and MR studies.

Effusions due to infection or inflammation of adjacent structures, traumatic hemorrhage and neoplasms including metastases can distend the episcleral space Figs. Capillary hemangiomas of the estallamirnto occur in a quarter to half of patients with Von Hippel-Lindau syndrome and are histologically similar to the associated cerebellar hemangioblastoma Fig.

The episcleral space is a potential space that can extend between the fascia and the sclera 1. Retinal detachments can be treated using scleral bands Figs.

Anotated illustration of globe for comparison with MRI anatomy. Uveitis can be serious possibly leading to permanent visual loss. Find articles by Premilla Pillay. The layers are only tightly adherent estsllamiento the optic disc and ora serrata where the RPE becomes continuous with the ciliary body. No history of trauma was noted.

Diffusion-weighted imaging, apparent diffusion coefficients, and fluid-attenuated inversion recovery MR imaging in endophthalmitis. These calcifications represent normal part of aging. The sclera maintains intraocular pressure and is the insertion site for the extra-ocular muscles. The lens forms the posterior boundary of the anterior chamber and is attached to the ciliary body via the zonular fibers. This process of shrinkage may result in traction causing separation of the posterior hyaloid membrane from the sensory retina termed posterior vitreous detachment.

T1W images are useful to rstallamiento metastases from melanocytic melanoma with the exception of hyperintense hemorrhagic or mucinous adenocarcinomas 6. 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.

Eye, orbit and visual system. Eye globe abnormalities can be readily detected on dedicated and non-dedicated CT and MR studies. In order to interpret the globe abnormality, a primary understanding of the globe anatomy is necessary. Choroidal black arrow and retinal dashed black arrow detachment is seen in left globe with underlying subchoroidal oclar subretinal fluid, respectively.

An understanding of the CT attenuation and MRI signal characteristics can also help in characterising the lesions, especially in the case of uveal melanoma. Malignant melanoma represents the most common intraocular malignancy in adults and occurs in the pigmented uveal tract 3. Enhancement of choroid is noted Bwhite arrowwhich is expected in detachment due to inflammatory response. Accelerated vitreous degeneration may result from trauma, inflammation endophthalmitis or significant myopia 1.

The cornea is a key component of the refractive system and measures 0. Scleritis may be complicated by exudative chorioretinal detachment and glaucoma Fig. The choroid merges with the ciliary body at the ora serrata and extends posteriorly to the optic nerve head. Axial non-contrast image from brain CT assessment of altered mental state. TOP Related.

KRIZNI MENADZMENT PDF

ESTALLAMIENTO OCULAR PDF

Mirg corrida toreador Inflammation of the uveal tract commonly involves the adjacent retina and sclera Fig. Endophthalmitis Endophthalmitis represents inflammation or infection involving the anterior chamber and vitreous humour. 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. Ciliary bodies form part of choroid dashed white arrows, B, C.

EA288 TDI PDF

The outer retinal pigment epithelium RPE is attached firmly to the choroid. Right-sided lens prosthesis is noted. The globe occupies one third of the orbital volume, with the vitreous humour representing two-thirds of the volume of the globe 2. No history of trauma was noted. Right choroidal detachment is ocylar limited posteriorly at expected location of vortex vein insertion white arrow and extending anterior to ora serrata black arrow. MRI provides exquisite soft tissue contrast and the sclera can be distinguished from the choroid and retina. The ciliary body musculature attaches to the lens via the zonular fibers and is important for accommodation.

Related Articles