title: Neonatal spontaneous pneumomediastinum and the Spinnaker-Sail sign.
authors.affiliation: Centro Hospitalar Leiria Pombal, Leiria, Portugal.
authors.forename: Ricardo
authors.initials: R
authors.lastname: Monteiro
authors.affiliation: Centro Hospitalar Leiria Pombal, Leiria, Portugal.
authors.forename: Lígia
authors.initials: L
authors.lastname: Paulos
authors.affiliation: Centro Hospitalar Leiria Pombal, Leiria, Portugal.
authors.forename: João do
authors.initials: Jd
authors.lastname: Agro
authors.affiliation: Centro Hospitalar Leiria Pombal, Leiria, Portugal.
authors.forename: Lina
authors.initials: L
authors.lastname: Winckler
mesh_terms: D057768:Brief, Resolved, Unexplained Event / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D006801:Humans; D007231:Infant, Newborn; D008478:Mediastinal Emphysema / Q000000981:diagnostic imaging*; D011859:Radiography; D035583:Rare Diseases / Q000000981:diagnostic imaging*; D013352:Subcutaneous Emphysema / Q000000981:diagnostic imaging*; D047929:Term Birth