Sandilands, 30, had the blood vessel-related procedure on Thursday.
The towering ruck star was forced to miss a major Dockers pre-season session on Friday as he recovered from the surgery.
Sandilands will, however, be back at training on Monday morning, with the club dismissing the problem as minor.
Injuries have limited Sandilands' past two campaigns with the Dockers, with a "turf toe" problem restricting the 211cm giant to 13 games in 2011 and then 14 games last year.
But, despite his body setbacks the dominant ruckman declared recently he was determined to play on past the remaining two years of his current Fremantle contract.
"I'm contracted for the next two years and I'm feeling really good at the moment," he said earlier this month.
"If the body keeps holding up, there's no reason why that would be the end of it."
Fremantle has yet to comment officially on Sandilands' latest setback.