Muscle Hemangiomatosis presenting as a severe feature in a patient with the pten mutation: Expanding the phenotype of vascular malformations in bannayan-riley-ruvalcaba syndrome
Marques Jr. W.
Balkan Journal of Medical Genetics
45 - 50
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Bannayan-Riley-Ruvalcaba syndrome (BRRS) is a rare autosomal, dominantly-inherited, hamartoma syndrome with distinct phenotypic features. Mutations in the PTEN gene have been identified in PTEN hamartoma tumor syndromes. Our aim was to determine the correlation of phenotype-genotype relationships in a BRRS case. We have evaluated a PTEN mutation in a patient with vascular anomalies and the phenotypic findings of BRRS. We described an 8-year-old girl with the clinical features of BRRS, specifically with vascular anomalies. The mutation in the PTEN gene was identified by DNA sequencing. In our patient, we defined a de novo nonsense R335X (c.1003 C>T) mutation in exon 8, which results in a premature termination codon. Due to vascular anomalies and hemangioma, the patient's left leg was amputated 1 year after the hemangioma diagnosis. Bannayan - Riley - Ruvalcaba syndrome patients with macrocephaly and vascular anomalies should be considered for PTEN mutation analysis and special medical care.
KeywordsBannayan - Riley - Ruvalcaba Syndrome (BRRS)
phosphatidylinositol 3,4,5 trisphosphate 3 phosphatase
Bannayan Riley Ruvalcaba syndrome
congenital blood vessel malformation
facial nerve paralysis
genotype phenotype correlation
nuclear magnetic resonance imaging