Abstract
Cleft lip and/or palate patients treated in our department during the seven-year period from January 2010 to December 2017 were analyzed statistically.
1） We studied 313 patients who visited the Plastic & Cosmetic Surgery Department of Kawasaki Medical School Hospital which included 234 with cleft lip and palate and 79 with isolated cleft palate.
2） Regarding districts of residence, 75％ were from Chugoku and 17.4％ were from Shikoku. Thus, most of the patients were residents of the Chugoku and Shikoku districts.
3） Regarding age at first visit, 57.8％ were less than one month old and 81.7％ were less than three months old.
4） The average birth weight of the cleft lip and palate group was 3,005.9g and that of the cleft palate group was 2,911.7g.
5） The left-right ratio of the cleft side in unilateral cleft cases was 1.4 : 1 with left side predominance.
6） Cleft lip and/or palate patients were mostly males while isolated cleft palate patients were mostly females.
7） Consanguineous marriage was found in 11.7％ of patients. The incidence of cleft palate was three times higher in the cleft lip group than the non-cleft lip group.
8） Concomitant malformation was found in 15.8％ of all patients. Patients with isolated cleft palate showed the highest incidence of a variety of anomalies.
