My husband has had rt lung surgery for cancer removing one lump and then another lump occurred and opted to have radiation which seamed to solve the issue. Now there is a large lump under the rt arm about 8 inches down. we have had a ultrasound on 2-11-2015 showing findings : Superficial soft tissues of the rt side of the back demonstrate a subcutaneous hypoechoic mass which may represent complex cyst or solid lesion 34x27x29mm. No calcification or hypervaxcularity within it. A second smaller mass is 12x10x9mm, also solid or complex cystic due to numerous internal echoes. No calcification of hypervasculaarity. Etiology uncertain. What would be your opinion?