<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi, Im female 22 yrs old, and I found a lump on my left calf, near where the fibula bone is. Im very active person, and having a routine activities for competitionChinese martial arts. I wonder if the lump caused by those exercises?Its painless, but started from yesterday after I squeezed it, its getting painfulcome and go, but its more like a pinched nerve from the lump area to my foot. Could you tell me if this case is a serious problemnot? Thank you  <response>: Hi.it is best if you consult with an orthopedic surgeon. That lump on your left calf might just be an inflammatory reaction secondary to your strenuous activities, but it could also be a lump with an underlying pathology. A complete physical examination by your physician would be of great help. Diagnostic evaluation such as an MRI might also be indicated. Hope this helps. Good day!! Chat Doctor. 