Only 50-70% of pilonidal cysts contain hair at surgery. It is more common in adolescent and young males. Other risk factors include hirsute people, hair in the gluteal cleft, sitting occupations, obesity, and caucasian race.
How many stages of the life cycle does a butterfly have? Butterflies have 4 stages of life: egg, caterpillar, pupa and butterfly. The butterfly starts out its life in an egg, and once it is laid, it eats it for its first meal. Once â¦a caterpillar, it transforms itself into a cocoon, also known as the pupa stage. It stays inside the cocoon for about 85 days.
Metamorphosis. Butterflies and moths go through a life cycle known as complete metamorphosis. The stages of their life cycle include: egg, larva, pupa, and adult. Below is a description of each life stage, as well as photographs showing each stage in the life cycle of Papilio polytes, the Common Mormon Butterfly.