The nurse is performing a physical examination of a patient and observes a well-healed old scar on the right shoulder. The scar is hypertrophied, elevated, and irregular without any redness or irritation. The patient states, "I had shoulder surgery about 5 years ago." The nurse documents this finding as which of the following?
a) Keloid
b) Hematoma
c) Laceration
d) Abscess