Cyste (Cyst) er en lukket sekk. Cyste (cyst) kan inneholde luft, væske eller halvfast materiale. En samling av puss kalles en abscess, og dette er ikke en cyste. Cysten må kanskje fjernes kirurgisk, men det avhenger av type og plassering.
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 ― Asymptomatiske klumper som oppstår plutselig mellom leddene. Hvis diagnosen ganglioncyste bekreftes, kan problemet løses ved å trykke hardt på knuten for å sprenge cysten inne.
Mucocele ― Det vises som en myk støt på leppene uten noen symptomer.
