Lump near bicep on crease of arm?

Several things: This problem mandates a real-time (face-to-face) meeting with a doctor. A history has to be taken along with a examination as well as labs and other tests. Only after all this will his doctor be in a position to tell him what's wrong and what needs to be done to help him.

Injury?: Did you injure it? It could actually be a tendon rupture of the biceps itself if you injured it. If no injury, there are multiple potential causes such as a lipoma, inflamed node, epidermis if cyst to name a few. Don't hesitate to be seen for it.