Congenital Hypertrophy of Retinal Pigment Epithelium (CHRPE)
There is a round, well-circumscribed pigmented lesion. There are depigmented halos within the lesion. Rarely, there are multiple pigmented lesions in the same area (bear-track lesions).
Learn to differentiate CHRPE from choroidal naevus.

Other signs:

  • In bear-track lesions, the patient may have colostomy for familial polyposis coli.

1. What is the significance of congenital retinal pigment epithelium hypertrophy?


2. How do you differentiate CHRPE from choroidal naevus?

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Bear track lesions
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choroidal naevus with paler colour and less
distinct edge than CHRPE

CHRPE with darker colour and well-defined edges
and central halos
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