Synonyms for Lesion:

n.

black eye, athlete's foot, blackhead, boil, bedsore, abscess. concussion, bruising, loss, sprain, self-injury, bruise. •blemish (noun)
kink, spot, nick, imperfection, fault, scratch, spoilage, abrasion, scrape, rift, blemish, speck, mark, scab, weal, wart, chip, hack, pockmark, defacement, notch, blotch, blot, score, fleck, distortion, fracture, disfigurement, deformity, gash, stigma, drawback, flaw, freckle, slit, damage, scar, impurity, eyesore, sore, blister, tarnish, splotch, hurt, stain, discoloration, mar, dot, check, scuff, defect, brand.
•injury, wound (noun)
gash, bruise, scrape, scratch, sore, abrasion.
•lesion (noun)
wound.
•wound (noun)
tumor.

Other synonyms:

•Other relevant words:
boil, blackhead, self-injury, tumor, bedsore, concussion, wound, sprain, bruise, abscess, bruising, loss.

Usage examples for lesion

1. Many cases are on record in which such an accident has first drawn attention to the presence of a new- growth, or other serious lesion in the bone. – Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition. by Alexander Miles Alexis Thomson