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Classification of abnormal uterine bleeding

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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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

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The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

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