CYST

literally a bladder, is any tumour thet contains fluid. The sebaceous cyst, or wen, is the most common. This cyst arises from the mouth of an oijl-gland in the skin becoming blocked. The gland continues to produce oil, which can no longer escape. The gland thus becomes distended with retained oil and forms a cyst in the skin. It can readily be removed under cocaine by the family doctor, without chloroform or other general anesthetic being nece ary. [Refer to Hydatid Cyst.) [s. 348]