Lisch nodules are iris hamartomas most commonly associated with which condition?

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Multiple Choice

Lisch nodules are iris hamartomas most commonly associated with which condition?

Lisch nodules are pigmented iris hamartomas, made up of melanocytes in the iris stroma, that commonly accompany Neurofibromatosis type 1. They appear as light brown elevations on the surface of the iris and are often seen in childhood, increasing with age. In NF1, their presence is one of the ocular features that supports the diagnosis when combined with other findings such as café-au-lait spots or neurofibromas. They typically do not affect vision. The other conditions listed have different ocular or systemic hallmarks and do not characteristically feature iris Lisch nodules. Neurofibromatosis type 2 centers on vestibular schwannomas and other CNS tumors rather than iris hamartomas; Dandy-Walker is a hindbrain malformation; tuberous sclerosis involves cortical tubers, subependymal nodules, and retinal (not iris) hamartomas among other signs.

Lisch nodules are pigmented iris hamartomas, made up of melanocytes in the iris stroma, that commonly accompany Neurofibromatosis type 1. They appear as light brown elevations on the surface of the iris and are often seen in childhood, increasing with age. In NF1, their presence is one of the ocular features that supports the diagnosis when combined with other findings such as café-au-lait spots or neurofibromas. They typically do not affect vision.

The other conditions listed have different ocular or systemic hallmarks and do not characteristically feature iris Lisch nodules. Neurofibromatosis type 2 centers on vestibular schwannomas and other CNS tumors rather than iris hamartomas; Dandy-Walker is a hindbrain malformation; tuberous sclerosis involves cortical tubers, subependymal nodules, and retinal (not iris) hamartomas among other signs.

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