2014 Volume 40 Issue 4 Pages 437-442
We divided extracapsular spread (ECS) into 2 types, and examined the relativity with a prognosis. Among 124 cases with oral squamous cell carcinoma (OSCC) from January 2008 to December 2012 in the Department of Oral and Maxillofacial Surgery, Nagasaki University Hospital, extracapsular spread (ECS) was observed in 23 cases. Type B, which were macroscopically defined as the extent tumor invasion to the perinodal fat or muscle tissue, revealed a high recurrence rate (60%), and there were 3 cases of distant metastasis death. The two-year disease-specific survival rate of Type B was 53.3%, and Type B significantly revealed poor prognosis (P < 0.05). In this report, univariate analysis revealed that the prognosis of ECS in OSCC patients might be associated with the number of pathological positive lymph nodes (pN ≥ 4) and type B of ECS, respectively (P < 0.01).
