Hard, immovable lump on shin since may. feels like bruise but no mark.started the size of pea, just noticed itsabout the size of a gumball. nervous!

Need to see an ort--: Hopod to be properly diagnosed. An xray for starters would reveal if its a bony lesion or not, or it could be a muscle hernia, a ganglion, a fatty tumour (lipoma), neuroma, fibroma, all would be possibilities. Rarely a callus (healing bone from a fracture, can occur, as a result of a trivial injury {often unremembered}). Good luck.

Needs examined: Growing mass needs to be checked for different options. Anything from a varicose vein to a benign fibroma, to a bone tumor... Have a physician look at it.