Cysts & Swellings of Skin and Subcutaneous Tissue

A bread-and-butter clinical surgery topic where examiners test your bedside reasoning: how you describe a swelling, the one sign that nails the diagnosis, and the surgical principle behind treatment. Most questions are image- or vignette-based, so anchor every lesion to a single discriminating feature. A cyst is a fluid- or semisolid-filled cavity lined by epithelium (true cyst) or by compressed fibrous tissue (fa…