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.
The egg stage lasts a few weeks in most butterflies but eggs laid close to winter, especially in temperate regions, go through a diapause stage, and the hatching may take place only in spring. Other butterflies may lay their eggs in the spring and have them hatch in the summer. These butterflies are usually northern species (Mourning Cloak, Tortoiseshells) Some butterflies' wings may take up to three hours to dry while others take about one hour.