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The congenital malformations are the macroscopic anomalies existing to the birth, even though they are not immediately detectable. They hit 3 to 4% of the general population and are on the one hand responsible important of the infantile morbidity as well as mortality foetal.


A retrospective survey has been led in ZSUR of Katwa on 21 children badly formed of which 12 recorded badly formed to the Matanda hospital and 9 recorded badly formed to the HGR of Katwa on a total of 10339 living births


The global prevalence of the congenital malformations in the ZSUR of Katwa rises to 0.2%. The polydactylies predominate in the congenital malformations with 47.5%. The malformations are observed more in the age group of the women in childbirth between 35-40 years is 35.5%. The women in childbirth with a parity superior to 4 represented 53.2% against 46.8% of the women in childbirth with parity lower or equal to 4. The main factors of risk are a gestity superior to 4 (76.2%) and maternal age superior or equal than 35 years. The malformations are observed more in the masculine sex predominating with 61.9% against 38.1% for the feminine sex. The apparition of the malformations has been observed more at the newborns having a weight lower to 2500 g (52.4%) against 47.6% of the newborns having a weight superior to 2500 g. After correction of the malformations, 71.5% succeeded against 28.5% case of death.


The congenital malformations remain a major problem in public health, more because of the frequency but also of the medico-surgical and economic load on the human societies, in term of precocious mortality and vestigial invalidity.

Key words: Prevalence- congenital anomaly.

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