Abstract
Among 90 cases of partial Monosomy of the short arm of chromosome 9 that have been described in the literature, only 4 cases have been reported in Japan. We describe a new case associated with cleft palate. The patient was a 1-month-old girl. She came to our hospital for treatment of cleft palate in 1994. Because of her peculiar facial appearance, including slanted eyes, flat nasal bridge, and prominent forehead, we conducted a chromosome analysis, which revealed a partial monosomy of the short arm of chromosome 9 (9p-syndrome). At the age of 2.5 years, her physical development was favorable, and we performed palatoplasty with the patient under general anesthesia. She is being observed at the department of pediatrics and our department since the operation.
