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Clinical profile of cystic fibrosis. Atypical presentation
Abdelhamid S Najada1, Muna M Dahabreh
1Department of Pediatrics, King Hussein Medical Center, PO Box 855019, Amman 11855, Jordan. a_najada@hotmail.com
Insights
Cystic fibrosis presents unusually in some children, with rare symptoms like pulmonary hypertension and metabolic alkalosis. Early diagnosis through neonatal screening can improve outcomes for this genetic disorder.
Area of Science:
- Pediatrics
- Genetics
- Pulmonology
Background:
- Cystic fibrosis (CF) is a genetic disorder with diverse clinical manifestations.
- Classical CF diagnosis often involves respiratory and digestive symptoms.
- Unusual presentations can delay diagnosis and treatment.
Purpose of the Study:
- To document and analyze atypical clinical presentations of cystic fibrosis in pediatric patients.
- To highlight the spectrum of CF symptoms beyond typical respiratory and gastrointestinal issues.
Main Methods:
- Retrospective review of 90 pediatric patients diagnosed with classical cystic fibrosis.
- Inclusion criteria: age 1 day to 14 years, diagnosed between 2002-2008.
- Data collected: age at presentation/diagnosis, clinical features, family history, lab results, sweat chloride, and radiology.
Main Results:
- Recurrent wheezy chest was the most common initial symptom (24%).
- Direct hyperbilirubinemia was the least common (3%).
- Seven patients (8%) exhibited unusual presentations including pulmonary hypertension, metabolic alkalosis, severe iron deficiency anemia, and ichthyotic skin lesions.
Conclusions:
- The varied clinical spectrum of cystic fibrosis underscores the importance of recognizing atypical signs.
- National neonatal screening programs are crucial for early detection and reducing disease burden.
Objective:
To describe the unusual presentation among patients with confirmed cystic fibrosis.
Methods:
A retrospective review was carried out on all children (n=90) with the diagnosis of classical cystic fibrosis who attended the Respiratory Pediatric Clinic at King Hussein Medical Center, Amman, Jordan from January 2002--December 2008. All children from one day old to 14 years of age were included. Files of those with unusual presentation were reviewed. Age at presentation and diagnosis, clinical presentation, and family history were collected. Relevant laboratory results, sweat chloride readings, and radiological features were also reviewed.
Results:
Ninety children (males 51 [57%] and females 39 [43%]) with classic cystic fibrosis were included. The most common initial classical presenting manifestation was recurrent wheezy chest (24%). The least common presentation was direct hyperbirubinemia (3%). Seven cases (8%) had unusual clinical presentations: early pulmonary hypertension, non-obstructive left hydronephrosis with metabolic alkalosis, single isolated episode of metabolic alkalosis, severe iron deficiency anemia with short stature, and the finding of ichthyotic skin lesions. Three of these patients had a positive family history of cystic fibrosis. Two patients with pulmonary hypertension died. The overall mortality rate was 4%.
Conclusion:
The wide variability of clinical presentations reflects the diversity of clinical picture of cystic fibrosis as a disease. Neonatal screening programs at a national level can decrease the burden of the disease.
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