Colson (hamstring) is questionable to return to Sunday's game at Carolina.
Colson was activated from the Chargers' active/non-football illness list Tuesday after passing his physical, Aaron Wilson of KPRC 2 Houston reports.
Head coach Jim Harbaugh told reporters Wednesday that Colson's stint on the active/non-football illness list is due to an appendectomy, Eric Smith of the Chargers' official site reports.
The Chargers placed Colston (undisclosed) on the active/non-football injury list Wednesday, Aaron Wilson of KPRC 2 Houston reports.