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Why do meningiomas grow during pregnancy?
Date:11/20/2012

Philadelphia, Pa. (November 16. 2012) Meningiomas are a common type of benign brain tumor that sometimes grows dramatically in pregnant women. A new study suggests that this sudden tumor growth likely results from "hemodynamic changes" associated with pregnancy, reports the November issue of Neurosurgery, official journal of the Congress of Neurological Surgeons. The journal is published by Lippincott Williams & Wilkins, a part of Wolters Kluwer Health.

The study also identifies some key characteristics associated with rapid growth of meningiomas in pregnant women. The lead author was Dr. Eriks A. Lusis of Washington University School of Medicine, St Louis, Mo.

'Dramatic Growth' of Meningiomas in Pregnant Women

From the records of four university medical centers, the researchers identified 17 women with meningiomas requiring surgery during pregnancy, or shortly afterward. Meningiomas are relatively common, usually benign (noncancerous) tumors that arise in the tissues lining the brain (meninges). They cause problems when they grow large enough to affect brain functions.

Over the years, there have been several reports of meningiomas enlarging or becoming symptomatic during pregnancy. For this reasonand because meningiomas occur more often in women than menit has sometimes been assumed that rapid tumor growth is related to changes in hormone levels during pregnancy. Dr. Lusis and colleagues sought to evaluate this theory, as well as to look at other characteristics of meningiomas in pregnant women.

Surgery for meningioma was successful in 16 of the 17 patients; the remaining patient died before surgery. Most of the women developed meningioma-related symptoms during the third trimester of preg
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Contact: Connie Hughes
Connie.Hughes@wolterskluwer.com
646-674-6348
Wolters Kluwer Health
Source:Eurekalert

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