What defines a pilonidal cyst?

A pilonidal cyst is specifically characterized as a cyst that forms near the tailbone, often resulting in pain and discomfort, particularly when inflamed or infected. These cysts can contain hair, skin debris, and can develop in the natal cleft of the buttocks. The condition can lead to recurrent infections, which may require surgical intervention for drainage or removal.

The other options relate to different medical conditions: bowel telescoping refers to intussusception, inflammation of the colon refers to conditions like colitis, and twisting of the cecum relates to cecal volvulus; none of these are associated with the unique formation and location of a pilonidal cyst. Therefore, the definition of a pilonidal cyst is accurately captured in the first choice, highlighting its common location near the tailbone and its tendency to become infected.