“…The morphological variations of the SHP are important to medical procedures performed in the pelvic region for various disciplines such as proctology (Cosimelli et al, 1994;Yamakoshi et al, 1997), gynecology (Krames, 1999), urology (Donohue and Foster, 1998;Rosenberg et al, 1998;Terrone et al, 2001;Kabalin, 2002), angiology (Ohshiro and Kosaki, 1984;Sabri and Cotton, 1971;van Schaik et al, 2001), orthopedics (Johnson and McGuire, 1981;Macek, 1982;Flynn and Price, 1984;Crofts et al, 1994;Selberg and Lackey, 1994;Tiusanen et al, 1995;Lazennec et al, 1999;Burke, 2001), as well as in videolaparoscopic surgeries (Chen and Soong, 1997;Steege, 1998). In addition, the topographical positioning of the SHP is important in anesthesiology to perform anesthetic blockade of this visceral plexus (Plancarte et al, 1997;Rosenberg et al 1998;Kanazi et al, 1999;Krames, 1999;Aeschbach and Mekhail, 2000;Golianu et al, 2000).…”