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.
Peritoneal Cancer. Peritoneal cancer is a rare cancer that develops in the peritoneum, a thin, delicate sheet that lines the inside wall of the abdomen and covers the uterus and extends over the bladder and rectum. The peritoneum is made of epithelial cells.