Cysts

thumb|Benign cyst kidney; radiological appearances mimic renal cancer. A cyst is a closed sac in the body, having a distinct envelope and division compared with the nearby tissue. Hence, it is a cluster of cells that have 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 mat

fluid-filled sac in the ovary

hair-containing cyst or sinus, occurring chiefly in the coccygeal region

Human disease

human anatomy

medical condition

medical condition

Benign growths of the vaginal epithelium

medical condition

human disease

benign cyst in the pineal gland