Hey there! Hanson update: I just took him to the vet, they tried to drain the fluid from his seroma because it grew significantly but after 2 full syringes and Hanson getting restless, the vet decided it'd be better to put in a drain. So, Hanson is staying over night at the vet and getting his 5 day drain put in tomorrow. We still can't pinpoint the cause so I'm also having more bloodwork done to rule anything out.