This anatomically complex region has been the subject of many books. In this part, inguinal and femoral hernia repairs and hydrocelectomy (Chapters 115 to 118) are illustrated. Inguinal lymph node dissection (Chapter 119) and sentinel node biopsy for melanoma of the trunk (Chapter 120) conclude the part, which serves as a transition to the next two sections: The Sacral Region and Perineum (Chapters 121 to 125) and The Lower Extremity (Chapters 126 to 134).