Endometrial hyperplasia is broadly defined as an excessive cellular proliferation leading to an increased volume of endometrial tissue. It is characterised by an increase in the endometrial gland-to-stroma ratio greater than 1:1.1
Endometrial hyperplasia is further classified as simple or complex, with or without atypia. This classification system is based on the complexity and crowding of the glandular architecture.1
The most common presenting symptom of endometrial hyperplasia is abnormal uterine bleeding, including:
However, endometrial hyperplasia can also be asymptomatic and can spontaneously regress without being detected.1
Oestrogen stimulates endometrial proliferation.1 A relative excess of oestrogen (exogenous or endogenous) compared with progesterone is considered to be one of the principle causes in endometrial hyperplasias.1
Key risk factors in post-menopausal women include:
Other risk factors include:
Reporting adverse events and quality complaints
Adverse events should be reported. Reporting forms and information can be found at www.mhra.gov.uk/yellowcard. Adverse events should also be reported to Bayer plc.
If you want to report an adverse event or quality complaint, reports can be directed to: Tel: 01182063500 or email: firstname.lastname@example.org
Further information is available on the “contact” tab at www.bayer.co.uk.