Intravitreal hemorrhages are more commonly associated with CMV than with Toxoplasmosis.

Study for the NBEO Ocular Disease Part 1 Test. Use flashcards and multiple choice questions, each with hints and explanations, to prepare for your exam! Get ready for your success!

Multiple Choice

Intravitreal hemorrhages are more commonly associated with CMV than with Toxoplasmosis.

Explanation:
Intravitreal hemorrhages come from CMV retinitis because CMV causes necrotizing retinitis with prominent vascular involvement and bleeding along the retina, leading to a hemorrhagic, “pizza pie” appearance especially in immunocompromised eyes. Toxoplasma retinochoroiditis, by contrast, classically presents as a focal white necrotizing lesion with dense overlying vitreous inflammation; the hallmark sign is the “headlight in a fog” due to vitritis, and retinal hemorrhages are not the defining feature. So the pattern of hemorrhage points more toward CMV than toxoplasmosis. If you see a lot of intraretinal or retinal hemorrhages with necrosis in an at-risk patient, CMV retinitis is the better fit.

Intravitreal hemorrhages come from CMV retinitis because CMV causes necrotizing retinitis with prominent vascular involvement and bleeding along the retina, leading to a hemorrhagic, “pizza pie” appearance especially in immunocompromised eyes. Toxoplasma retinochoroiditis, by contrast, classically presents as a focal white necrotizing lesion with dense overlying vitreous inflammation; the hallmark sign is the “headlight in a fog” due to vitritis, and retinal hemorrhages are not the defining feature. So the pattern of hemorrhage points more toward CMV than toxoplasmosis. If you see a lot of intraretinal or retinal hemorrhages with necrosis in an at-risk patient, CMV retinitis is the better fit.

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