How to describe nodule?

A nodule is a small, rounded mass of tissue that can develop in various parts of the body, often indicating an abnormal growth. It is typically solid and may vary in size, ranging from a few millimeters to several centimeters. Nodules can be benign or malignant and may arise from various causes, including infections, inflammation, or tumors. Medical evaluation is often necessary to determine the nature and significance of a nodule.