The tendon pain above the instep is cancer.

There are many reasons for muscle pain on the instep, not necessarily related to cancer. The most common reasons are the following: First, fasciitis, fasciitis is a chronic localized inflammation caused by chronic traction damage for a long time. Second, infection of surrounding tissues, tissue infection caused by swelling stimulation around, causing muscle pain on the back of the foot. However, if the tumor or previous tumor and malignant tumor, this situation needs to take X-ray examination, there may be a certain relationship with cancer, further examination is needed to clarify.