title: Pediatric case of the day. Giant posterior mediastinal cystic hygroma.
mesh_terms: D002648:Child; D003937:Diagnosis, Differential; D006801:Humans; D008202:Lymphangioma / Q000000981:diagnostic imaging*; D008297:Male; D008479:Mediastinal Neoplasms / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed