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 as his model. The uptake of the new-style swimsuit was very slow, and even then the bikini was not regarded as suitable clothing beyond the beach or pool. During the 1960s, Mary Quant's designs featured exposed navels and bare midriffs. Exposure of the male navel was limited well into the 1960s. The swimwear covered the lower abdomen and usually the navel. Occasionally the swimwear would be worn immediately below the navel. The swimwear evolved to longer legs and lower waist line. Male swimwear could not be worn above the navel nor below the knee in events of the National Collegiate