A kista is a type of cyst, which is a closed sac-like structure filled with fluid, air, or other substances. Kistas can form in various parts of the body and may vary in size. They are usually benign, meaning they are not cancerous, and often do not cause symptoms. However, some kistas can become painful or lead to complications if they grow large or become infected. Kistas can occur in different tissues, including the skin, organs, and bones. Common types include sebaceous kistas, which form in the skin, and ovarian kistas, which develop in the ovaries. Diagnosis typically involves imaging tests, and treatment may include monitoring or surgical removal if necessary.