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Lisch nodules on surface of iris Lisch nodule , also known as iris hamartoma , is a pigmented hamartomatous nodular aggregate of dendritic melanocytes affecting the iris , [ 1 ] named after Austrian ophthalmologist Karl Lisch (1907–1999), who first recognized them in 1937.
Lisch nodules – iris hamartomas seen in neurofibromatosis. Ocular melanosis – a condition characterized by increased pigmentation of the uveal tract , episclera , and anterior chamber angle. Oculodermal melanocytosis (nevus of Ota) [ 3 ]
Lisch nodule: Karl Lisch: ophthalmology: type I neurofibromatosis: yellow brown hamartomata on iris Lisker's sign? internal medicine: deep venous thrombosis (needed) tenderness on percussion of antero-medial tibia Litten's sign: Moritz Litten: cardiology: infective endocarditis: eMedicine: cotton-wool exudate in the retina Lombard effect ...
Watson syndrome is an autosomal dominant condition characterized by Lisch nodules of the ocular iris, axillary/inguinal freckling, pulmonary valvular stenosis, relative macrocephaly, short stature, and neurofibromas. [1] Watson syndrome is allelic to NF1, the same gene associated with neurofibromatosis type 1. [2]
Lisch nodules (benign hamartomas of the iris) are seen in almost all patients but they do not cause any visual or ocular impairment. Neurofibromas are benign nerve sheath tumors that occur in peripheral nerves. These typically develop during the teenage years.
Features common in neurofibromatosis – like Lisch nodules (iris hamartomas diagnosed on slit lamp exam), bone abnormalities, neurofibromas, optic pathway gliomas and malignant peripheral nerve sheath tumors – are absent in Legius syndrome. [1]
Brushfield spots tend to be obscured by pigmentation of the anterior border layer of the iris in patients with darker irides. Hence, they are much more likely to be observed in children with lightly pigmented eyes. Brushfield spots are more commonly found in Down syndrome patients of European descent than similarly affected children of Asian ...
At least two growths on the eye's iris; Abnormal growth of the spine ; Lisch nodules; Tumors on the adrenal glands called pheochromocytomas; People with neurofibromatosis type 2 can exhibit the same type of skin symptoms as type 1, but not necessarily in every case. [10]