Role of Transforming Growth Factor-β1 and Smads Signaling Pathway in Intrauterine Adhesion

Table 1

The American Fertility Society classification of intrauterine adhesions, 1988.

Extent of cavity involved	<1/3	1/3–2/3	>2/3
	1	2	4
Type of adhesions	Filmy	Filmy & dense	Dense
	1	2	4
Menstrual pattern	Normal	Hypomenorrhea	Amenorrhea
	0	2	4

Stage l (mild) 1–4, Stage ll (moderate) 5–8, and Stage lll (severe) 9–12.