title: Pathologic quiz case.
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis / Q000473:pathology* / Q000628:therapy; D003110:Colonic Neoplasms / Q000175:diagnosis; D003937:Diagnosis, Differential; D005005:Ethmoid Sinus; D006801:Humans; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis; D009364:Neoplasm Recurrence, Local; D009669:Nose Neoplasms / Q000175:diagnosis / Q000473:pathology* / Q000628:therapy; D010255:Paranasal Sinus Neoplasms / Q000473:pathology / Q000628:therapy