腹腔镜右结肠切除术与腔内吻合 肝脏转移灶结肠癌

Laparoscopic Right Colectomy With Intracorporeal Anastomosis And Liver Metastasectomy For Colon Can

A cyst is a closed sac, having a distinct membrane and division[clarification needed] compared to the nearby tissue. It may contain air, fluids, or semi-solid material. A collection of pus is called an abscess, not a cyst. Once formed, a cyst may sometimes resolve on its own. Whether a cyst that fails to resolve may need to be removed by surgery will depend on what type of cyst it is and where in the body it has formed.
Acne vulgaris (or simply acne) is a common human skin disease, characterized by areas of skin with seborrhea (scaly red skin), comedones (blackheads and whiteheads), papules (pinheads), nodules (large papules), pimples, and possibly scarring. Acne affects mostly skin with the densest population of sebaceous follicles; these areas include the face, the upper part of the chest, and the back Severe acne is inflammatory, but acne can also manifest in noninflammatory forms.