Classification of abnormal uterine bleeding

Classification of abnormal uterine bleeding

The International Federation of Gynecology and Obstetrics (FIGO) has classified AUB into 9 main categories, which are arranged according to the acronym "PALM-COEIN".

In general the basic classification system has

• 4 categories which are structural entities that can be measured through imaging techniques and/or histopathology - "Polyp, Adenomyosis, Leiomyoma, Maligancy and hyperplasia" group
• 4 categories which are non structural entities that are not defined by imaging or histopathology - "Coagulopathy, Ovulatory dysfunction, Endometrial, Iatrogenic" group
• 1 category reserved for entities that are not yet classified - "Not yet classified"

The presence or absence of each criterion is noted using "0" (if not present), "1" (if present) and "?" (if not yet assessed).

Reference:

1. Munro MG et al.FIGO classification system (PALM-COEIN) for causes of abnormal uterine bleeding in nongravid women of reproductive age. Int J Gynaecol Obstet. 2011;113(1):3-13