English to Russian Medical Medical (general) Medical Handbook (Infant Neurology)

Triple X syndrome

The incidence is 1 in 1000 live births in females. The cause is karyotype 47, XXX.

Unusual to present in the newborn period or infancy. Indeed, may not present throughout life! Associated with hypotonia and delayed development in some. The clue to the diagnosis is often disorders of menstruation after puberty.

(?) редко развивается, выявляется, встречается, проявляется (?) какой вариант наиболее точный?

TIA!