The clinical approach of the observer (gynecologists, postgraduates, biologists, dermatologists, health professionals), as well as of the novice colposcopist and the expert, is the direct observation of a lesion. But the same colposcopic finding may be the expression of different etiologies. For this reason, a diagnosis cannot be articulated according to a school treatment or an examination by topics. This atlas is the first in international literature that provides a deductive approach and follows the identical diagnostic path of the observer: from lesion to diagnosis. This book offers an essential but explanatory text with 540 illustrations, including instructive diagrams and findings in colposcopy, vulvoscopy and anoscopy. The rich iconography represents a precious quick or in-depth consultation tool in a specialized field where the vision of the uterine cervix cannot be detached from the evaluation of the vulva and anal region. A full immersion session completes this work, showing the most interesting and unusual cases that may occur in daily clinical practice.