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.
Life cycle: From egg to adult, butterflies undergo a series of physical transformations known as metamorphosis. After mating, the female butterfly lays her eggs on a caterpillar food or âhostâ plant. The eggs can hatch within a few days, or within months or even years, depending on whether or not conditions are right.