title: Bullhead sign.
authors.affiliation: From Lourdes Hospital, Kochi, Kerala, India.
authors.forename: Joe
authors.initials: J
authors.lastname: Thomas
mesh_terms: D020083:Acquired Hyperostosis Syndrome / Q000000981:diagnostic imaging* / Q000473:pathology*; D000328:Adult; D006801:Humans; D008297:Male; D011877:Radionuclide Imaging