Pannus is a meical term for a hanging flap of tissue. When involving the stomach, it is called a panniculus and consists of skin, fat, and sometimes contents of the internal abdomen as part of a hernia. A pannus can be the result of loose hanging tissues after pregnancy or weight loss. It can also be the result of obesity. A pannus can come in many different sizes and shapes and can become very large, even hanging down below the knees. The extra tissue of a hanging pannus can make personal hygiene difficult. Skin conditions such as yeast infections under the pannus are common problems. A massive hanging pannus can get in the way of walking. A smaller pannus can be an annoyance with clothing as the individual sits or stands. Pannus can be removed by plastic surgery operation called a panniculectomy (which is a type of tummy tuck).