Lateral cervical thymic cyst.
D002648:Child; D003560:Cysts / Q000473:pathology*; D006801:Humans; D008206:Lymphatic Diseases / Q000473:pathology; D008297:Male; D008476:Mediastinal Cyst / Q000473:pathology; D009333:Neck; D013950:Thymus Gland / Q000473:pathology*