Head & neck · 2019
Lymphatic mapping with SPECT-CT for evaluation of contralateral drainage in lateralized oropharyngeal cancers using an awake injection technique.
СтатьяНазвание и аннотация: Перевод пока не подготовлен
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Thomas Carissa M, Khan Mohemmed N, Mohan Ravi, Hendler Aaron, Hosni Ali, Chepeha Douglas B, Goldstein David P, Cooper Richard M, de Almeida John R
Аннотация
BACKGROUND: Risk of contralateral nodal metastases in oropharyngeal squamous cell carcinoma (OPSCC) is currently based on clinical risk factors. We propose lymphatic mapping with single photon emission computed tomography (SPECT-CT) for tumor-specific delineation of lymphatic drainage to guide treatment.
METHODS: Retrospective review of lymphatic drainage patterns in cT1-2 OPSCC and contralateral cN0 neck with a nonoperative, awake injection of 99 m-Tc sulfur colloid and SPECT-CT.
RESULTS: Ten patients were reviewed. Primary sites included tonsil (n = 8, 80%) and tongue base (n = 2, 20%). All patients tolerated awake injections with no complications. Nine patients (90%) demonstrated satisfactory migration of radiotracer to neck node(s) with seven (78%) to the ipsilateral lateral neck, one (11%) to the ipsilateral lateral neck and retropharynx, and one (11%) to bilateral lateral neck nodes.
CONCLUSIONS: Characterization of lymphatic drainage in OPSCC is feasible using a nonoperative injection technique and SPECT-CT. Drainage to the contralateral neck is rare, warranting further study to tailor treatment appropriately.
METHODS: Retrospective review of lymphatic drainage patterns in cT1-2 OPSCC and contralateral cN0 neck with a nonoperative, awake injection of 99 m-Tc sulfur colloid and SPECT-CT.
RESULTS: Ten patients were reviewed. Primary sites included tonsil (n = 8, 80%) and tongue base (n = 2, 20%). All patients tolerated awake injections with no complications. Nine patients (90%) demonstrated satisfactory migration of radiotracer to neck node(s) with seven (78%) to the ipsilateral lateral neck, one (11%) to the ipsilateral lateral neck and retropharynx, and one (11%) to bilateral lateral neck nodes.
CONCLUSIONS: Characterization of lymphatic drainage in OPSCC is feasible using a nonoperative injection technique and SPECT-CT. Drainage to the contralateral neck is rare, warranting further study to tailor treatment appropriately.