ABSTRACT
Objective To study the metastasis frequencies and areas of solitary bronchioloalveolar carcinoma (BAC) of different diameters, so as to guide the intraoperative lymph node dissection. Methods A total of 137 patients with pathologically-confirmed solitary BAC received surgical treatment. The patients were divided into 3 groups according to tumor diameters: ≤2 cm group,2-3 cm group,and >3 cm group. The N1 and N2 lymph node metastasis rates of the 3 groups were analyzed. Results The N1 lymph node metastasis rates were significantly different between the 3 groups (P<0. 05); for tumors with greater diameter, the tenth group lymph nodes should be completely dissected. The N2 lymph node metastasis rates were not significantly between the 3 groups (P<0. 05). Conclusion The tumor diameter of BAC may be used to guide the dissection extent of N1 group lymph nodes, but not that of N2 group lymph nodes.
ABSTRACT
Objective To study the metastasis frequencies and areas of solitary bronchioloalveolar carcinoma (BAC) of different diameters, so as to guide the intraoperative lymph node dissection. Methods A total of 137 patients with pathologically-confirmed solitary BAC received surgical treatment. The patients were divided into 3 groups according to tumor diameters: ≤2 cm group,2-3 cm group,and >3 cm group. The N1 and N2 lymph node metastasis rates of the 3 groups were analyzed. Results The N1 lymph node metastasis rates were significantly different between the 3 groups (P<0. 05); for tumors with greater diameter, the tenth group lymph nodes should be completely dissected. The N2 lymph node metastasis rates were not significantly between the 3 groups (P<0. 05). Conclusion The tumor diameter of BAC may be used to guide the dissection extent of N1 group lymph nodes, but not that of N2 group lymph nodes.