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Neumol. pediátr. (En línea) ; 11(1): 44-48, ene. 2016. graf, ilus
Article in Spanish | LILACS | ID: lil-789397

ABSTRACT

Cystic fibrosis (CF) is a genetic common disease within the white population, caused by mutations in the CF transmembrane conductance regulator gene (CFTR). It mainly involves progressive respiratory diseases and pancreatic exocrine insufficiency. Atypical CF represents approximately 2 percent of cases and affects adolescents or adults with pancreatic exocrine sufficiency, normal or borderline sweat chloride test, or presenting a single clinical feature, such as chronic rhinosinusitis, nasal polyposis, pancreatitis, biliary cirrhosis, portal hypertension, or obstructive azoospermia. Clinical heterogeneity depends on the amount of functional protein, which is influenced by the type of mutation. Other genes and environmental exposure could modify the phenotype. Certain conditions may result from CFTR dysfunction without fulfilling diagnostic criteria for CF: the term CFTR-related disease is used to describe a single organ disease, and in cases where a mild CF phenotype is apparent, it is called atypical CF. We describe a case of osteocondroplastic tracheobronchopaty as a form of mild presentation of atypical CF or CFTR-related disease.


La fibrosis quística (FQ), enfermedad genética frecuente de la raza blanca, es causada por la mutación del gen que codifica para la proteína reguladora de transmembrana (CFTR). Produce principalmente una enfermedad respiratoria progresiva e insuficiencia pancreática. La FQ atípica representa el 2 por ciento de los casos. Aparece en adolescentes y adultos con suficiencia pancreática, test del sudor normal o dudoso o solo un sistema afectado: sinusitis crónica, poliposis nasal, pancreatitis, cirrosis biliar, hipertensión portal o azospermia obstructiva. La heterogeneidad clínica depende de la cantidad de CFTR funcionante, la que está influenciada por el tipo de mutación. Otros genes o la exposición ambiental podrían modificar el fenotipo. Cuando existe un órgano comprometido se la ha llamado enfermedad relacionada CFTR; en casos leves es el término FQ atípica. Esta revisión describe un paciente con traqueobroncopatía osteocondroplástica como forma de presentación de FQ atípica o de enfermedad relacionada a CFTR.


Subject(s)
Humans , Child , Cystic Fibrosis Transmembrane Conductance Regulator , Respiratory Tract Diseases/diagnosis , Respiratory Tract Diseases/genetics , Cystic Fibrosis/diagnosis , Cystic Fibrosis/genetics
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