Occult Neck Metastasis Rate of Laryngeal and Hypopharyngeal Squamous Cell Carcinoma

Korean Journal of Head & Neck Oncology 1999;15(1):18-21.
Published online May 30, 1999.

Eun Chang Choi;Dong Young Kim;Yoon Woo Koh;Jung Pyoe Hong;Sei Young Lee;Won Pyo Hong

후두 및 하인두 편평세포암종의 경부 잠재전이율

최은창;김동영;고윤우;홍정표;이세영;홍원표

Abstract

Background and Objectives: Occult neck metastasis rate of laryngeal and hypopharyngeal cancer varies widely depending upon authors. Materials and Methods: Sixty four cases, previously untreated, of N0 laryngeal and hypopharyngeal squamous cell carcinoma patients who underwent surgery as an initial treatment from 1992 to 1997 were evaluated. All had unilateral or bilateral elective neck dissection at the time of surgery for the primary. Occult neck metastasis rate was evaluated with pathologic examination of neck dissection specimen.
Results
Occult neck metastasis rate by primary site was as follows. Supraglottis ipsilateral 32%(8/25) contralateral 15%(3/20), glottis ipsilateral 17%(5/30), contralateral 0%(0/22), hypopharynx ipsilateral 78%(7/9), contralateral 25%(2/8).
Conclusion
Supraglottic and hypopharyngeal cancer may need elective neck treatment bilaterally. Occult neck metastasis of glottic cancer to opposite site was minimal.

Key Words: Occult neck metastasis, Larynx cancer, Hypopharynx cancer, Elective neck dissection, Squamous cell carcinoma