There are many reasons why there is a raised hard lump in the calf bone, the common reasons are lipoma, osteochondroma, osteosarcoma, bone cyst and fibroma.
1. Lipoma: the raised hard lump may be the lipoma produced in the soft tissue part of the calf, which usually occurs in the subcutaneous fat, with clear boundary and good mobility.
2. Osteochondroma: the raised hard lump may be osteochondroma in the calf bone, which occurs in children and adolescents, and may be complicated with fracture, bone deformity, vascular injury, nerve injury and other diseases.
3. Osteosarcoma: the raised hard lump may be the formation of osteosarcoma in the lower leg, osteosarcoma is a kind of malignant tumor, preferred in the age group of 10~25 years old, often manifested as local swelling and pain.
4. Bone cysts: raised lumps may be the appearance of bone cysts in the lower leg, bone cysts are a kind of cysts appearing in the cavity of bone marrow, which are most common in children, teenagers and people with a history of cysts, and the volume of cysts is too large and easy to cause bone fracture.
5. Fibroma: Fibroma is one of the benign lesions, most of the patients do not have obvious symptoms, only for the local raised hard lumps, clear boundaries and no adhesion to the surrounding tissues. The lesions have less impact on the patients, and can be followed up and observed after the diagnosis is confirmed by medical examination. For the rapid development, or lead to patients with local symptoms, can consider surgical treatment to remove the mass.
There are other reasons for a raised lump in the calf bone, such as malunion after fracture, etc. It is recommended to go to the hospital in time to find out the cause of the disease.