Masquerade Syndromes

Question 1

Differentiate RP from uveitis

Answer 1

waxy pallor, bone spicules, arteriolar attenuation, nyctalopia, ERG changes

Question 2

Differentiate ocular ischemic syndrome from uveitis

Answer 2

mid-peripheral scattered heme, vascular risk factors, narrowed arterioles

Question 3

Drugs that can cause uveitis

Answer 3

rifabutin: hypopyon
cidofovir: CME, hypotony

Question 4

Most common masquerade syndrome

Answer 4

primary vitreoretinal lymphoma

Question 5

cytokine levels suggestive of primary intraocular lymphoma?

Answer 5

IL-10 > IL-6

Question 6

subset of cells that are most prominent in primary intraocular lymphoma

Answer 6

B lymphocytes

Question 7

waxing and waning creamy subretinal lesions in asymptomatic eye without vitritis, also with salmon pink conjunctival lesions

Answer 7

secondary uveal lymphoid proliferations

Question 8

Dx and histopathology of orange skin lesion in child with iris nodule and hyphema

Answer 8

JXE. foamy histopcytes and Touton giant cell