I ve noticed a small hard lump on the outside of my left upper biceps for several weeks now. The skin over and around the lump are was suddenly darkened with what seemed like some sort of bleeding under the skin. A week ago, a doctor told me it was nothing more that a few tiny ruptured blood vessels from possibly a trauma to the arm and that the large dark stain should clear up in 2 to 3 weeks. Well the dark patch has almost cleared up now but the relatively painless lump remains. The lump can only be felt by running a finger over the area because it is invisible from outside. What do you think please? By the way, I broke my middle finger on the same arm about a year ago and had a lot of numbness and stiffness after POP removal. Although the finger movement remains somewhat stiff, I can t relate it to the biceps lump. Sorry for the long explanation, thank you.