Thymic cysts.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003560:Cysts / Q000473:pathology*; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008476:Mediastinal Cyst / Q000175:diagnosis / Q000473:pathology*; D008875:Middle Aged; D009333:Neck; D013950:Thymus Gland / Q000473:pathology*