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Table 1 Classification of IUA by the American Fertility Society, 1988

From: Intrauterine adhesions (IUA): has there been progress in understanding and treatment over the last 20 years?

  Characteristics
Extent of cavity involved <1/3 <1/3–2/3 >2/3
  1 2 4
Type of adhesions Filmy Filmy and dense Dense
  1 2 4
Menstrual pattern Normal Hypomenorrhoea Amenorrhoea
  0 2 4
Prognostic classification HSG scorea Hysteroscopy score
 Stage I (mild) 1–4 b b
 Stage II (Moderate) 5–8 b b
 Stage III (severe) 9–12 b b
  1. aAll adhesion should be considered dense.
  2. bAdditional findings