title: Unilateral primary pulmonary agenesis and hypoplasia in monozygotic twins.
abstract: We describe 10-month-old identical female twin infants, one with primary left-sided pulmonary agenesis and the other with primary left-sided pulmonary hypoplasia. They came to our outpatient clinic complaining of persistent dry cough. The clinical examination revealed decreased air entry over the left hemithorax. Chest x-rays showed complete left-sided radio-opacity in both the twins. The chest computed tomography scan with contrast confirmed the diagnoses of left-sided pulmonary agenesis (twin A) and left-sided hypoplasia (twin B). No other associated congenital anomaly was noted in either of the twins. To our knowledge, such a condition in live monozygotic twins has not been previously reported in published studies.
authors.affiliation: Department of Pediatrics, Division of Respiratory Medicine; Department of Radiology, College of Medicine, King Saud University, Riyadh, Saudi Arabia. alsaadi@ksu.edu.sa
authors.forename: Muslim
authors.initials: M
authors.lastname: Alsaadi
authors.forename: Badr
authors.initials: B
authors.lastname: Al Muqhem
authors.forename: A
authors.initials: A
authors.lastname: Boukai
authors.forename: Shaikh M
authors.initials: SM
authors.lastname: Iqbal
mesh_terms: D000015:Abnormalities, Multiple; D005260:Female; D006801:Humans; D007223:Infant; D008168:Lung / Q000002:abnormalities* / Q000000981:diagnostic imaging; D008171:Lung Diseases / Q000000981:diagnostic imaging / Q000235:genetics*; D014057:Tomography, X-Ray Computed; D014430:Twins, Monozygotic