Macroscopically , deciduosis , frequently described in pregnancy but also observed in the perimenarchal and postmenopausal periods , manifests as small discrete nodules or excrescences on the peritoneal surface and not as large , firm plaques and nodules .

大体上，蜕膜病通常发生于妊娠期，但也可见于月经期前后和绝经期前后，在腹膜表面呈小而分散的结节或赘生物，而不是大而坚硬的斑块和结节。