title: [Detection of primary carcinoma by positron emission tomography in an unknown primary tumor with cervical metastasis: a case report].
abstract: Unknown primary tumors with cervical metastasis account for about 1-3% of patients with neck masses. In many cases, the primary site cannot be detected by diagnostic procedures such as endoscopy, computed tomography, or magnetic resonance imaging, affecting the treatment and prognosis of these patients unfavorably. A 43-year-old male patient presented with a painless mass in the neck. He had previously undergone a neck biopsy, the result of which had been reported as metastatic carcinoma. The primary site could not be determined by extensive diagnostic procedures. Investigation with positron emission tomography with 18F-2-fluoro-2-deoxy-D-glucose suggested the base of the tongue as the primary site, which was then confirmed by an endoscopic biopsy from the tongue. It should be borne in mind that positron emission tomography may be helpful in the diagnosis of unknown primary tumors with cervical metastasis.
authors.affiliation: Department of Otolaryngology, Medicine Faculty of Osmangazi University, Eskişehir, Turkey. hcakli@ogu.edu.tr
authors.forename: Hamdi
authors.initials: H
authors.lastname: Cakli
authors.forename: Fazilet
authors.initials: F
authors.lastname: Altin
authors.forename: Ilknur
authors.initials: I
authors.lastname: Ak
authors.forename: M Kezban
authors.initials: MK
authors.lastname: Gürbüz
authors.forename: Erkan
authors.initials: E
authors.lastname: Ozüdoğru
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D006258:Head and Neck Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000556:secondary / Q000601:surgery; D006801:Humans; D008297:Male; D009362:Neoplasm Metastasis; D009382:Neoplasms, Unknown Primary / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D049268:Positron-Emission Tomography; D011859:Radiography; D014062:Tongue Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery