My Boyfriend Had His Adrenaline Gland, Kidney And The Kidney

My boyfriend had his adrenaline gland, kidney and the kidney tube on his right side 9 months ago due to cancer now his right side is swollen like a softball lump and his waist is huge but his weight shows very little gain. His still has pain in his right testical from the surgery which the doc said would go away what is s causing all of this swollen and pulling of testical