This document summarizes a clinical discussion and case study on hygromas in dogs. It defines a hygroma as a fluid-filled swelling surrounded by a thick capsule that develops under the skin, most commonly on the outside of the elbow. Hygromas are caused by repeated trauma to bony areas from lying on hard surfaces. The case study describes a 6-year-old male dog presented with a ruptured hygroma mass on its elbow that had been growing for 1 month. The dog underwent surgical removal of the hygroma mass under sedation, which involved making an elliptical incision, removing the mass, and suturing the skin. Post-operative care included antibiotics and cleaning/band