Head & neck · 2011
Risks and clinical implications of perineural invasion in T1-2 oral tongue squamous cell carcinoma.
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Tai Shyh-Kuan, Li Wing-Yin, Chu Pen-Yuan, Chang Shyue-Yih, Tsai Tung-Lung, Wang Yi-Fen, Huang Jui-Lin
Аннотация
BACKGROUND: Risks of perineural invasion (PNI) in T1-2 oral tongue squamous cell carcinoma (SCC) have not been specifically elucidated.
METHODS: Pathological features, including PNI, were re-reviewed under regular hematoxylin-eosin staining in 190 patients with T1-2 oral tongue SCC.
RESULTS: Tumor thickness >5 mm, PNI(+), and lymphovascular invasion (+) independently predicted lymph node involvement. PNI(+) and neck observation also independently predicted neck recurrence, but only PNI(+) was associated with a poor disease-specific survival (DSS; p = .003). In patients who were clinically node negative (cN0), elective neck dissection contributed to a better DSS in patients with PNI(+) tumors (p = .046), but not in patients with PNI (-) tumors (p = .809). Additionally, increased tumor thickness predicted the presence of PNI.
CONCLUSION: PNI is a crucial pathological feature for T1-2 oral tongue SCC. Elective neck dissection should be performed in patients who were cN0 with PNI. Careful evaluation for PNI should be advocated in regular pathological diagnosis.
METHODS: Pathological features, including PNI, were re-reviewed under regular hematoxylin-eosin staining in 190 patients with T1-2 oral tongue SCC.
RESULTS: Tumor thickness >5 mm, PNI(+), and lymphovascular invasion (+) independently predicted lymph node involvement. PNI(+) and neck observation also independently predicted neck recurrence, but only PNI(+) was associated with a poor disease-specific survival (DSS; p = .003). In patients who were clinically node negative (cN0), elective neck dissection contributed to a better DSS in patients with PNI(+) tumors (p = .046), but not in patients with PNI (-) tumors (p = .809). Additionally, increased tumor thickness predicted the presence of PNI.
CONCLUSION: PNI is a crucial pathological feature for T1-2 oral tongue SCC. Elective neck dissection should be performed in patients who were cN0 with PNI. Careful evaluation for PNI should be advocated in regular pathological diagnosis.