title: Impact of sentinel node navigation technique for carcinoma of tongue with cervical node metastases.
abstract: We attempted lymph node mapping for clinically positive neck using sentinel node navigation technique. Technetium labeled rhenium sulfide was injected as a radiotracer in 11 patients with squamous cell carcinoma of the tongue. After surgery, the radioactivity and the ratio of metastatic area (RMA) of the removed nodes were measured. Average RMA (57%) of 18 high radioactive metastatic nodes was significantly lower than the RMA (90%) of 16 low radioactive metastatic nodes. Average number of metastatic nodes (4.7 nodes) in the five cases with low radioactive metastatic nodes was significantly larger than that (1.8 nodes) in the six cases with only high radioactive metastatic nodes. There is no accumulation of radioactive tracer if a lymph node is totally or predominantly occupied by metastatic cells. When the sentinel node was mostly occupied by malignant cells, the injected colloid could not flow to the sentinel node and flowed to a different lymph node through another basin. Sentinel node navigation technique can show the actual time of lymphatic flow at the operation of positive neck cases.
authors.affiliation: Department of Otolaryngology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima 960-1247, Japan. tmtzk@fmu.ac.jp
authors.forename: Takashi
authors.initials: T
authors.lastname: Matsuzuka
authors.forename: Makoto
authors.initials: M
authors.lastname: Kano
authors.forename: Iwao
authors.initials: I
authors.lastname: Ohtani
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Miura
authors.forename: Fumio
authors.initials: F
authors.lastname: Shishido
authors.forename: Koichi
authors.initials: K
authors.lastname: Omori
mesh_terms: D000328:Adult; D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery; D005260:Female; D006258:Head and Neck Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011877:Radionuclide Imaging; D019275:Radiopharmaceuticals; D012211:Rhenium; D021701:Sentinel Lymph Node Biopsy / Q000379:methods*; D017556:Technetium Compounds; D014062:Tongue Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery
chemical_list: D019275:Radiopharmaceuticals; D017556:Technetium Compounds; C030576:technetium Tc 99m rhenium colloid; D012211:Rhenium