Diverticulum: A small bulging sac pushing outward from the colon wall is a diverticulum. As a person ages, pressure within the large intestine (colon) causes pockets of tissue (sacs) that push out from the colon walls. The plural is diverticula. Diverticula can occur throughout the colon but are most common near the end of the left side of the colon, the sigmoid colon.
- Diverticulum, Meckel's
Diverticulum, Meckel’s: An outpouching of the small bowel. About 1 in every 50 (2%) people has a Meckel’s diverticulum. It is usually 2 inches long and is located about 2 feet before the junction of the small bowel with the colon (the large intestine) in the right lower abdomen. Meckel’s diverticulum can become inflamed, ulcerate […]
- Diving injury
Diving injury: An injury incurred from diving into water that is too shallow or has hidden hazards. These injuries may be to the head, neck, or spinal cord. Many diving injuries result when persons –predominantly males aged 15-25 years — plunge into swimming pools or natural bodies of water such as rivers, streams, lakes, and […]
- Dizygotic twin
Dizygotic twin: A twins who have shared a common uterine environment with its twin but is due to a different fertilized ovum. Dizygotic twins are also called fraternal twins.
- Dizziness, anxiety as a cause of
Dizziness, anxiety as a cause of: One cause of dizziness is over breathing (hyperventilation) due to anxiety. The over breathing also causes lightheadedness, a sense of unsteadiness and tingling around the mouth and fingertips.