Cystic Lesions: Differential Diagnosis, ICD-10 Coding & Surgical Protocols
Clinical Definition A cyst is a pathological, closed cavity or sac that is distinct from the surrounding tissue, typically lined by epithelium (true cyst) or connective tissue (pseudocyst). These structures may contain fluid, gas, or semi-solid material (such as keratin or cellular debris). While predominantly benign, cysts can manifest in almost any anatomical structure, ranging…