Sterility of the callous body

The sterility of the callous body is a pathology being defined by the absence of callous Corps. This absence can be total or partial. Its formation starts as from 5 weeks of life In utero and finishes at 17 weeks. This absence can be either isolated or associated with other pathologies.

Incidence

Sterilities all of the callous body confused causes would be met in 0,3 to 0,7% of the general population.

Diagnosis

Total sterilities of the callous body are suspectées in utero at the time of the echographic cuts standards of the examination of fetal brain . Partial sterility is of diagnosis much more difficult. Because of the embryology one cannot make diagnosis before 18 weeks and generally front 22 weeks . The position of the fetus at the time of the echographic examination is important: the study of the brain of the fetus is easier when that Ci with the head in top at the time of the examination

Etiology

For carrying the diagnosis of sterility isolated from the callous body, it is necessary to practice an echography in the search of assocée anomaly. A study of the fetal brain by IRM is essential. The checking of the fetal Caryotype will be carried out.

Syndromes associated with sterility with the callous body

This list is nonrestrictive

Forecast

It is difficult to carry the Pronostic of the children carrying a sterility isolated from the callous body. A great number of epilepsy S, delays of mental development, demonstrations psychotics are found among the carrying children this pathology but some of these children have also a normal development. There does not exist any test or examination which makes it possible to differentiate the children who will have a normal development of the others. The forecast of partial sterilities is quite as delicate, it depends of course on the localization and on extended from sterility.

Risk recurrence

It depends of course on the etiology. In the event of sterility isolated from the callous body, the risk of recurrence is from approximately 2 to 3%.

Sources

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