Cista (Cyst) ir slēgts maisiņš. Cista (cyst) var saturēt gaisu, šķidrumus vai puscietu materiālu. Strūtas kolekciju sauc par abscesu, kas nav cista. Cista var būt jānoņem ķirurģiski, taču tas ir atkarīgs no tās veida un atrašanās vietas.
A cyst is a closed sac, having a distinct envelope and division compared with the nearby tissue. Hence, it is a cluster of cells that has grouped together to form a sac (like the manner in which water molecules group together to form a bubble); however, the distinguishing aspect of a cyst is that the cells forming the "shell" of such a sac are distinctly abnormal (in both appearance and behaviour) when compared with all surrounding cells for that given location. A cyst may contain air, fluids, or semi-solid material. A collection of pus is called an abscess, not a cyst. Once formed, a cyst may resolve on its own. When a cyst fails to resolve, it may need to be removed surgically, but that would depend upon its type and location.
Ganglion cyst ― Asimptomātiski kunkuļi, kas pēkšņi rodas starp locītavām. Ja tiek apstiprināta ganglija cistas diagnoze, problēmu var atrisināt, spēcīgi nospiežot mezglu, lai cista pārsprāgtu.
Mucocele ― Tas izskatās kā mīksts pumpis uz lūpām bez jebkādiem simptomiem.
