Fantastic news, just what I was hoping for, for you. Have been thinking of you today.
The best news you could have had.
Be careful with thst seroma. I ended up with an infection in mine, 9 days in to Radiotherapy, which the radiologist strongly recommended draining. Asked him to try to speak to my Rad Onc, but he couldn't get on to her. Worst decision I could have made, as you'd know. For the next couple treatments I was on the table for 1&1/2 - 2hours, took another week to get it back to a normal timeframe. Learnt my lesson the hard way :p