Stage 0 | no prolapse is demonstrated |
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Stage 1 | the most distal portion of the prolapse is more than 1 cm above the level of the hymen |
Stage 2 | the most distal portion of the prolapse is 1 cm or less proximal or distal to the hymenal plane |
Stage 3 | the most distal portion of the prolapse protrudes more than 1 cm below the hymen but no farther than 2 cm less than the total vaginal length (for example, not all of the vagina has prolapsed). |
Stage 4 | vaginal eversion is essentially complete |