RESUMO
CONTEXT AND OBJECTIVE: Oculo-auriculo-vertebral spectrum (OAVS) is considered to be a defect of embryogenesis involving structures originating from the first branchial arches. Our objective was to describe the clinical and cytogenetic findings from a sample of patients with the phenotype of OAVS. DESIGN AND SETTING: Cross-sectional study in a referral hospital in southern Brazil. METHODS: The sample consisted of 23 patients who presented clinical findings in at least two of these four areas: orocraniofacial, ocular, auricular and vertebral. The patients underwent a clinical protocol and cytogenetic evaluation through high-resolution karyotyping, fluorescence in situ hybridization for 5p and 22q11 microdeletions and investigation of chromosomal instability for Fanconi anemia. RESULTS: Cytogenetic abnormalities were observed in three cases (13%) and consisted of: 47,XX,+mar; mos 47,XX,+mar/46,XX; and 46,XX,t(6;10)(q13; q24). We observed cases of OAVS with histories of gestational exposition to fluoxetine, retinoic acid and crack. One of our patients was a discordant monozygotic twin who had shown asymmetrical growth restriction during pregnancy. Our patients with OAVS were characterized by a broad clinical spectrum and some presented atypical findings such as lower-limb reduction defect and a tumor in the right arm, suggestive of hemangioma/lymphangioma. CONCLUSIONS: We found a wide range of clinical characteristics among the patients with OAVS. Different chromosomal abnormalities and gestational expositions were also observed. Thus, our findings highlight the heterogeneity of the etiology of OAVS and the importance of these factors in the clinical and cytogenetic evaluation of these patients. .
CONTEXTO E OBJETIVO: O espectro oculoauriculovertebral (EOAV) é considerado um defeito de embriogênese envolvendo estruturas originadas a partir dos primeiros arcos branquiais. Nosso objetivo foi descrever os achados clínicos e citogenéticos de uma amostra de pacientes com fenótipo de EOAV. TIPO DE ESTUDO E LOCAL: Estudo transversal em um hospital de referência no sul do Brasil. MÉTODOS: A amostra foi composta de 23 pacientes que apresentaram achados clínicos em pelo menos duas das quatro áreas: orocraniofacial, oculares, auriculares e vertebrais. Os pacientes foram submetidos a um protocolo clínico e avaliação citogenética através do cariótipo de alta resolução, hibridização in situ fluorescente para as microdeleções 5p e 22q11 e pesquisa de instabilidade cromossômica para anemia de Fanconi. RESULTADOS: Alterações citogenéticas foram observadas em três casos (13%) e consistiam de: 47,XX,+mar; mos 47,XX,+mar/46,XX e 46,XX,t(6;10)(q13;q24). Observamos casos de EOAV com história de exposição gestacional à fluoxetina, ácido retinoico e crack. Um dos nossos pacientes foi um gêmeo monozigótico discordante que teve restrição de crescimento assimétrica durante a gravidez. Nossos pacientes com EOAV foram caracterizados por um amplo espectro clínico e alguns apresentaram achados clínicos atípicos como um defeito de redução de membro inferior e um tumor do braço direito, sugestivo de hemangioma/linfangioma. CONCLUSÕES: Verificamos grande variedade de características clínicas entre os pacientes com EOAV. Também foram observadas diferentes anomalias cromossômicas e exposições gestacionais. Assim, nossos achados salientam a heterogeneidade da etiologia do EOAV e a importância desses fatores na avaliação clínica e citogenética desses pacientes. .
Assuntos
Adolescente , Adulto , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Gravidez , Adulto Jovem , Aberrações Cromossômicas , Síndrome de Goldenhar/genética , Fenótipo , Anormalidades Induzidas por Medicamentos , Brasil , Costela Cervical/anormalidades , Costela Cervical , Deleção Cromossômica , Estudos Transversais , Hibridização in Situ Fluorescente , Cariotipagem , Mandíbula/anormalidades , Mandíbula , Complicações na Gravidez , Teratógenos , Ultrassonografia Pré-NatalRESUMO
CONTEXT AND OBJECTIVE: Oculo-auriculo-vertebral spectrum (OAVS) is considered to be a defect of embryogenesis involving structures originating from the first branchial arches. Our objective was to describe the clinical and cytogenetic findings from a sample of patients with the phenotype of OAVS. DESIGN AND SETTING: Cross-sectional study in a referral hospital in southern Brazil. METHODS: The sample consisted of 23 patients who presented clinical findings in at least two of these four areas: orocraniofacial, ocular, auricular and vertebral. The patients underwent a clinical protocol and cytogenetic evaluation through high-resolution karyotyping, fluorescence in situ hybridization for 5p and 22q11 microdeletions and investigation of chromosomal instability for Fanconi anemia. RESULTS: Cytogenetic abnormalities were observed in three cases (13%) and consisted of: 47,XX,+mar; mos 47,XX,+mar/46,XX; and 46,XX,t(6;10)(q13; q24). We observed cases of OAVS with histories of gestational exposition to fluoxetine, retinoic acid and crack. One of our patients was a discordant monozygotic twin who had shown asymmetrical growth restriction during pregnancy. Our patients with OAVS were characterized by a broad clinical spectrum and some presented atypical findings such as lower-limb reduction defect and a tumor in the right arm, suggestive of hemangioma/lymphangioma. CONCLUSIONS: We found a wide range of clinical characteristics among the patients with OAVS. Different chromosomal abnormalities and gestational expositions were also observed. Thus, our findings highlight the heterogeneity of the etiology of OAVS and the importance of these factors in the clinical and cytogenetic evaluation of these patients.
