Hyung Kyu Yang

2014

It is a great honor and pleasure to publish Hemorrhoids in English edition. Even though I have been performing hemorrhoidectomy for 27 years, there are still many points about hemorrhoids that I have not yet understood. Recently, the concept regarding the pathogenesis of hemorrhoids has changed; hemorrhoidal tissues are now considered as normal structure that keeps anal continence. In the past, we used to remove large amount of hemorrhoidal tissue since hemorrhoids were considered as an abnormal tissue.