title: Pathologic quiz case 2. Signet-ring cell adenocarcinoma of the ethmoid sinuses.
authors.forename: P D
authors.initials: PD
authors.lastname: Costantino
authors.forename: K
authors.initials: K
authors.lastname: Jones
authors.forename: R A
authors.initials: RA
authors.lastname: Atiyah
mesh_terms: D002288:Adenocarcinoma, Mucinous / Q000473:pathology*; D000328:Adult; D005005:Ethmoid Sinus / Q000473:pathology*; D005260:Female; D006801:Humans; D010255:Paranasal Sinus Neoplasms / Q000473:pathology*