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Ann Neurol. 2010 Mar;67(3):398-404. doi: 10.1002/ana.21888.

Pregnancy increases the growth rates of World Health Organization grade II gliomas.

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Department of Neurosurgery, Sainte-Anne Hospital, 1 rue Cabanis, 75674 Paris Cedex 14, France.


Twelve pregnancies in 11 adult women harboring World Health Organization (WHO) grade II gliomas (GIIGs) prior to pregnancy were reviewed to address whether pregnancy affects tumor growth using a quantitative approach of the radiological velocity of diametric expansion (VDE) on successive magnetic resonance images. VDE was significantly increased during pregnancy as compared to prepregnancy (p < 0.001) and to postdelivery (p = 0.012) periods. Pregnancy increases the radiological growth rates of GIIGs. An increase in seizure frequency was observed concomitantly in 40% of cases and further oncological treatment was started after delivery in 25% of cases.

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