What are Python variables. By definition, a variable is something that may change often in your program. First, you use variables to refer to various kinds of data such string, integer, list, etc. Then you manipulate this data through variables.
Cysts are non- cancerous, closed pockets of tissue that can be filled with fluid, pus, or other material. They can appear anywhere and feel like small peas under the surface of the skin. Cysts can develop as a result of infection, clogging of sebaceous glands (oil glands), or around foreign bodies, such as earrings.
Print Email. An arachnoid (pronounced ah-RACK-noid) cyst is a sac filled with fluid inside the head or spine. Arachnoid cysts develop between the brain or spinal cord and a membrane that covers the brain and spinal cord, called the arachnoid membrane.