My Doctor Removed A Skin Cancer From My Leg. The

my doctor removed a skin cancer from my leg. the cancer seemed to come back and the area swelled up. he then prescribed minocycline 100 mg . after 2 weeks or so went by he examined the area where he removed the cancer and took another blood sample. the swelling had gone down about 70 %. he then prescribed ciprofloxacinhcl 500 mg tab. he was pleased with the results but i wonder why he switched medications.