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DOI: 10.1177/000992287601500706 The Problem of Trisomy 22A Case Report and a Discussion of the Variant FormsDepartment of Pediatrics and the Department of Preventive Medicine and Environmental Health, College of Medicine, University of Iowa, Iowa City, Ia.
Department of Pediatrics and the Department of Preventive Medicine and Environmental Health, College of Medicine, University of Iowa, Iowa City, Ia.
Department of Pediatrics and the Department of Preventive Medicine and Environmental Health, College of Medicine, University of Iowa, Iowa City, Ia.
Department of Pediatrics and the Department of Preventive Medicine and Environmental Health, College of Medicine, University of Iowa, Iowa City, Ia. A case of trisomy 22 with partial long arm deletion (47, +22 q—) studied by G-banding is presented. The patient, a five-month-old male, showed failure to thrive, delayed psychomotor development, large, low-set ears, mild micrognathia, atrial septal defect, and marked muscular hypotonia. The father's karyotype was normal. The mother's karyotype was 46 XX, but one of the #22 chromosomes showed a deletion of the long arm as seen in the proband's karyotype. A comparison with previously reported cases in the literature indicates a great variability of clinical features of trisomy 22: "classical form," cat eye syndrome, and abortive cases (as this reported case).
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