Many people use the terms ocean and sea interchangeably when speaking about the ocean, but there is a difference between the two terms when speaking of geography (the study of the Earth's surface).
The peritoneal dialysis catheter is composed of a flexible silicone tube with an open-end port and several side holes to provide optimal drainage and absorption of the dialysate. The extraperitoneal component of the catheter has either one or two Dacron cuffs. The Dacron cuffs are for optimal ingrowth and fixation.
Primary peritoneal cancer. Primary peritoneal cancer (PPC) is a rare cancer that starts in the peritoneum. The peritoneum is the membrane that lines the inside of the abdomen, clinging to and covering all the organs in the abdomen â for example the intestines, the liver and the stomach.