Growth-like bump on achilles tendon?

Options: It may take a physical examination to get to the bottom of things. Clearly, it could be a "growth" or just an enlargement of existing tissues. The enlargement could be from the bone immediately under the tendon, on the tendon or from the tissues immediately on top of the tendon. Whether it is new growth, part of a repair process or due to mechanical irritation are just some of the subtleties.

This could be a bone spur in the area of the tendon or swelling of the tendon itself. If painful, I would see an orthopedic surgeon to evaluate further. If nonpainful, probably ok to monitor.