title: Photo quiz. Facial masses.
authors.affiliation: Athens University School of Medicine, Greece.
authors.forename: M E
authors.initials: ME
authors.lastname: Falagas
authors.forename: E
authors.initials: E
authors.lastname: Siakavellas
authors.forename: R
authors.initials: R
authors.lastname: Scheib
mesh_terms: D000328:Adult; D003560:Cysts / Q000175:diagnosis* / Q000821:virology; D015658:HIV Infections / Q000150:complications*; D006801:Humans; D008297:Male; D010306:Parotid Gland / Q000473:pathology* / Q000821:virology; D012466:Salivary Gland Diseases / Q000175:diagnosis* / Q000473:pathology