Neck lymph node metastases to the posterior triangle apex: Evaluation of clinical and histopathological risk factors

摘要: Background Dissection of posterior triangle apex (APEX) is a surgical step in supraomohyoid and lateral neck dissections. The prevalence lymphatic metastases at this site the clinicohistopathologic conditions that influence their occurrence have not been established. We evaluated risk factors for cervical lymph nodes APEX. Methods Sixty-two dissections were performed 51 patients with squamous cell carcinoma oropharynx, hypopharynx, oral cavity, glottic larynx, supraglottic larynx or primary occult tumor. correlated presence positive APEX level involved either clinically (CLIN) histopathologically (H/P) number CLIN- H/P-positive levels metastases. elective (N0) therapeutic (N+) was also compared. This compared each level. histopathologic comparisons between calculated N0, N+, all tumor APEX. Results The overall 6.5%. N0 2.3% N+ it 16.7%. tumors pharynx 23.1%, cavity 3.6%, 0% other sites. Metastases influenced by CLIN H/P necks. had no on APEX. Factors II III All analyzed using Fisher's Poisson's test. Conclusions The necks 7.3 times greater than 6.4 significantly larynx. Histopathologic to are did There isolated triangle. © 2000 John Wiley & Sons, Inc. Head Neck 22: 564–571, 2000.