'Invisible' microscopic endometriosis: a review.

Endometriosis can have very subtle visual appearances. All theories of origin imply some early and presumably tiny form of the disease which potentially cannot be detected by the unaided human eye. A review of the literature indicates that with increasing magnification at surgery, virtually all endometriosis can be visualized. Invisible microscopic endometriosis is an unproven entity which retards intellectual progress in the study of this disease. Copyright 2003 S. Karger AG, Basel