What does the prefix "cysto" refer to in medical terminology?

The prefix "cysto" in medical terminology specifically refers to the bladder, particularly the urinary bladder. This term is derived from the Greek word "kystis," which means "bladder" or "sac." In various medical contexts, "cysto" often appears in terms such as "cystoscopy," which is a procedure involving the examination of the bladder, and "cystitis," which refers to inflammation of the bladder. Understanding this prefix is crucial for medical professionals as it helps in accurately interpreting medical conditions and procedures related to the urinary system.