Cyst ni mfuko uliofungwa. Cyst inaweza kuwa na hewa, umajimaji, au nyenzo nusu‑imara. Mkusanyiko wa pus huitwa abscess, ambao si cyst. Uvimbe unaweza kuhitaji kuondolewa kwa upasuaji, lakini hilo litategemea aina na eneo lake.
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 ― Uvimbe usio na dalili ambao hutokea ghafla kati ya viungo. Ikiwa utambuzi wa cyst ya ganglioni imethibitishwa, tatizo linaweza kutatuliwa kwa kushinikiza nodule kwa bidii ili kupasuka cyst ndani.
Mucocele ― Inaonekana kama nundu laini kwenye midomo bila dalili zozote.
