TABLE 1.

Differential diagnosis between ocular toxocariasis and retinoblastoma^a

Parameter	Description
	Ocular toxocariasis	Retinoblastoma
Morphology	Centrally located mass with moderate enhancement revealed by MRI	Nodular in contour and lies along the posterior pole of the globe
Enhancement	Moderate uveoscleral enhancement or enhancement of a granuloma	Usually characterized by moderate or avid enhancement
Calcification	Rare	Punctate or speckled calcification in more than 90% of cases
Demographics	Patients usually 5–10 years of age	Observed before 5 years of age in more than 90% of cases, average age at diagnosis is ∼18 months
Signs and complications	Usually presents with unilateral visual loss, and pain and redness are common presenting symptoms	Leukocoria in more than half of cases; strabismus is the second most common presentation, occurring in ∼20% of cases

^aBased on data from reference 110.