Cities with similar population. Source: The Rochester, WA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency).
pilonidal cystectomy, a procedure performed to remove an abscessed pilonidal cyst with sinus tracts. Most common in young men, abscesses are drained during the acute stage and surgically excised during remission.
Pilonidal cyst facts. 1  Pilonidal cysts are sacs filled with hair and skin debris that form at the top of the crease of the buttocks above the sacrum. 2  Pilonidal cysts are caused by groups of hairs and debris trapped in the pores of the skin in the upper cleft of the buttock, forming an abscess.