lump in my husband's back shoulder

One day my husband noticed that there's a lump raised at the back of his shoulder about 3 inches in diameter, he said the lump is not painful but i'm worried that it could be cancer or malignant cists, anybody please tell me what to do.

[Ashley1219]

This may be just a simple calcium deposit. They often appear on the shoulder, and the size and lack of pain are consistent with a calcium deposit. I know, because my husband has one too. If this is the case, there isn't anything to worry about, and as long as it doesn't cause any pain, it can even be left untreated. However, if your husband does start experiencing pain, or if he just doesn't want the unsightly lump anymore, he can go to your doctor and have it removed. But regardless of what it is, he should have it checked out by a doctor (ideally a dermatologist) to make sure it isn't anything serious.