Is cyst cancer?

Cysts are mostly benign lesions, there will be a complete capsule outside, and the surrounding tissue boundaries are very clear. And the capsule is normally liquid material. Cysts can occur in many parts, such as liver cysts, kidney cysts, and ovarian cysts. Basically, cancer does not occur. Found cysts must not be too negligent, to regular review observation, such as liver cysts, if the growth rate is too fast, too large, prone to rupture bleeding, so must be closely observed.