Oculo-auriculo-vertebral spectrum in Klinefelter syndrome.

We report a boy with classical 47,XXY Klinefelter syndrome (KS) and oculo-auriculo-vertebral spectrum (OAV). Two patients with KS and OAV were reported previously. Also, the combination of bilateral aplasia of the mandibular ramus and condyle and KS has been documented.

Descriptive analysis of tibial pseudarthrosis in patients with neurofibromatosis 1.

Five percent of individuals with neurofibromatosis type 1 (NF1) present with congenital long bone pseudarthrosis (PA). In large series, 50-80% of patients with congenital long bone PA also have NF1. Very little information exists on the natural history and pathogenesis of PA in NF1.

Scanning the first part of the neurofibromatosis type 1 gene by RNA-SSCP: identification of three novel mutations and of two new polymorphisms.

Neurofibromatosis type 1 (NF1) of von Recklinghausen is a common autosomal dominant disorder, characterized by peripheral neurofibromas, café-au-lait spots and Lisch nodules of the iris. The high mutation rate at the NF1 locus results in a wide range of molecular abnormalities. We have scanned 14 different exons from the first part of the NF1 gene using the RNA-single strand conformation polymorphism (RNA-SSCP) method in a series of 40 NF1 patients.

Screening of neurofibromatosis type 1 gene: identification of a large deletion and of an intronic variant.

Neurofibromatosis type 1 of von Recklinghausen is a common autosomal dominant disorder, characterized by peripheral neurofibromas, café-au-lait spots and Lisch nodules of the iris. The high mutation rate at the neurofibromatosis type 1 locus results in a wide range of molecular abnormalities. We have screened seven different exons of the neurofibromatosis type 1 gene, including those codifying for the GAP-related domain, using the RNA-Single Strand Conformation Polymorphism (RNA-SSCP) method in a series of 59 neurofibromatosis type 1 patients.

Hypertension in children with neurofibromatosis.

Hypertension in neurofibromatosis is mostly a consequence of a stenosis of the renal artery or is due to phaeochromocytoma. Riccardi pointed out primary hypertension in patients with several cervical neurofibromas in the absence of phaeochromocytoma and he noticed that the elevation of BP was often already present in children. Nine (15.