Abnormal menstrual periods may have a variety of causes, such as
endometrial hyperplasia, endometrial polyps, uterine fibroids, and
abnormal thyroid or pituitary function.The endometrium is the
tissue lining the uterus. When the endometrium becomes unusually
thick it is called endometrial hyperplasia. Hyperplasia may cause
profuse or extended menstrual bleeding.
Review Date: 09/02/2009
Reviewed By: Susan Storck, MD, FACOG, Chief, Eastside Department of Obstetrics
and Gynecology, Group Health Cooperative of Puget Sound, Redmond,
Washington; Clinical Teaching Faculty, Department of Obstetrics and
Gynecology, University of Washington School of Medicine. Also
reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org)
