With the same objective proponents of a further limitation favour a selective neck dissection in the presence of initial cervical disease ( Traynor et al, 1996 Ambrosch et al, 2001). Surgical therapy of the lymphatic basins in head and neck malignancies has been evolved from radical neck dissection to modified radical neck dissection in order to reduce the morbidity of the procedure and to preserve as much function and quality of life as possible for the patient while still maintaining an oncologic sound result ( Suárez, 1962). Careful clinical staging of the neck and thorough pathological evaluation of the sentinel nodes are necessary to avoid false-negative results. Our results support the sentinel node concept in head and neck cancer and a definition of the sentinel nodes as the three nodes with the highest activity. In four patients, a sentinel lymph node could not be localised. Three metastases were detected only after additional sectioning of the sentinel nodes. In 12 patients clinically occult metastases were found in the sentinel nodes. Of these 34 patients were free of metastatic disease in the sentinel nodes and in the neck specimens. In 46 patients sentinel nodes were detected. Pathological findings of sentinel nodes and corresponding neck specimens were compared. Sentinel nodes were localised using a γ-probe in the setting of an elective neck dissection. In 50 patients with oral, pharyngeal or laryngeal carcinomas staged N0 up to 50 MBq technetium-99m colloid were injected peritumorally. The aim of the study was to assess the diagnostic value of the sentinel node method in patients suffering from squamous cell carcinoma of the upper aerodigestive tract.
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