Thymoma; clinicopathologic observation.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013945:Thymoma / Q000145:classification / Q000175:diagnosis*; D013953:Thymus Neoplasms / Q000145:classification / Q000175:diagnosis*