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Updated: Sep 11, 2025
Robot-assisted Total Mesorectal Excision and Lateral Pelvic Lymph Node Dissection for Locally Advanced Middle-low Rectal Cancer
Published on: February 12, 2022
Lymph node dissection as a local control during segmentectomy for small-sized and radiologically solid dominant and
Takahiro Mimae1, Yoshihiro Miyata1, Norifumi Tsubokawa1
1Department of Surgical Oncology, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, Hiroshima 734-8551, Japan.
Background:
Small-sized, peripherally located, and radiologically solid-dominant or pure solid nonsmall cell lung cancer (NSCLC) tumors are related to lymph node metastasis at a certain frequency. The aim of this study is to disclose the validity of lymph node dissection on oncological local control during segmentectomy for such tumors.
Methods:
We investigated the clinicopathological findings, the distribution of the involved lymph nodes, the patterns of lymph node recurrences, and the prognosis of 1921 patients with radiologically-determined ≤3 cm-sized, solid-dominant or pure solid NSCLC tumors without clinical lymph node involvement following complete resections with lobectomy (n = 1472) or segmentectomy (n = 449) between 2010 and 2020. The median follow-up duration for anonymized cases was 51.8 months.
Results:
The median age, solid tumor size, whole tumor size, and maximum of standardized uptake value were 72/69 years, 1.5/1.8 cm, 1.6/2.1 cm, and 2.0/3.5 in patients undergoing segmentectomy/lobectomy, respectively. Hilar lymph node metastases were recognized in 13 (3%) patients who underwent segmentectomy, and in 110 (8%) patients who underwent lobectomy, respectively. No patients experienced a recurrence of hilar lymph node metastasis in either adjacent or nonadjacent areas without distant metastasis after segmentectomy, while three patients experienced recurrence after lobectomy.
Conclusions:
Lymph node dissection can be adequately performed during segmentectomy for selected small and peripherally located NSCLC tumors.
