A keloid is an overgrowth of scar tissue that extends beyond the original site of skin injury.
Keloids can appear as raised, firm scars that may itch, feel tender, look darker than the surrounding skin, or continue growing beyond the original wound.
Imaging is only needed if the swelling is deeper than expected, unusually large, or not behaving like a typical skin scar.
Imaging is not usually required, but ultrasound or MRI may be used if the extent is unclear or deeper involvement is suspected.
Treatment can include steroid injections, silicone therapy, pressure therapy, laser treatment, or surgery in selected cases.
This entry explains the finding. The next step is having a radiologist interpret your specific scan, not a general definition.