Navel changes to diet and exercise, unexpected change in shape may be the result of ascites. In addition to change in shape being a possible side effect from ascites and umbilical hernias, the navel can be involved in umbilical sinus or fistula, which in rare cases can lead to menstrual or fecal discharge from the navel. Menstrual discharge from the umbilicus is a rare disorder associated with umbilical endometriosis. To minimize scarring, the navel is a recommended site of incision for various surgeries, including transgastric appendicectomy, gall bladder surgery, and the umbilicoplasty procedure itself. Abdominal thrusts is a first aid method
Cultural views on the navel the mythology, navel exposure was not encouraged in the earlier times. The traditional clothing of Japanese women has a wide cloth belt around the midriff to protect the belly and keep it warm. The Japanese believe the belly is the source of person's warmth and that the perfect navel is an innie. Although navel exposure has become a recent trend in fashion in Japan, annual "Heso Matsuri" ("belly button festivals") have been held in Japan since the late 1960s. The tradition of the Hokkaido "Heso Odori" ("belly button dance") began in 1968. Dancers make their "heso" ("belly button") into a