Hi! My husband, 34 yrs old, about 5'5" in height and weighs 60 kg, has a lump just under the buttock cheek on the right side. It is painless, but when pressed or pinched there is mild pain. The problem is, from a thumblike bump, it began to spread into smaller bumps and is now reaching near the testis. Please help! We don't know who specializes on this and we would just like to have a background on this before going to a doctor. Thanks!!!