Calf belly inside a hard lump there are a variety of cases, there are acute, chronic, if it is acute, such as a history of trauma, may be a local hematoma, or muscle injury after the local swelling, often accompanied by pressure pain, or infectious, there will be redness, swelling, pain. If it is long-lasting and there is no obvious pain, what kinds are included? For example, it can be a neurofibroma, and there is also a type of lipoma that is under the skin, and if it is deeper, it may be mistaken for a hard lump. In this case, you don’t need to be anxious, you can go to the hospital to see the doctor to do an ultrasound, and then do a physical examination, and you will be able to judge clearly what it is in the end.