Journal
FUKUSHIMA JOURNAL OF MEDICAL SCIENCE
Volume 68, Issue 2, Pages 87-93Publisher
FUKUSHIMA SOC MEDICAL SCIENCE
Keywords
Rectal cancer; neoadjuvant chemotherapy; CAPDX; oxaliplatin; capecitabine
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This study retrospectively evaluated the clinical short-term outcomes of neoadjuvant chemotherapy (NAC) using capecitabin and oxaliplatin for locally advanced rectal cancer. The study found that there were no severe adverse effects pre- or perioperatively, radical resection was achieved in all cases, and no cases of progressive disease were observed.
Background: The standard strategy in Japan for locally advanced rectal cancer is total mesorectal excision plus adjuvant chemotherapy. However, large tumors significantly restrict pelvic manipulation of the distal side of the tumor during surgery; therefore, from an oncological point of view, it is better to shrink the tumor as much as possible preoperatively to optimize the circumferential resection margin. In recent years, advances in systemic chemotherapy have significantly improved the tumor reduction effect, enabling such drug therapy prior to surgery for locally advanced rectal cancer. We herein retrospectively evaluated the clinical, short-term outcomes of patients treated by neoadjuvant chemotherapy (NAC) using capecitabin and oxaliplatin (CAPDX), focusing on overall safety as well as clinical and pathological staging responses to NAC. Methods: We applied the preoperative chemotherapy protocol to T3-4, any N, MO or Mla (with resectable metastases) (UICC 8th) Ra/Rb rectal cancers. The chemotherapy regimen consisted of four cycles of CAPDX. After NAC, curative intent surgery with total mesorectal excision/tumorspecific mesorectal excision with/without metastasectomy was performed. Adverse effects (AEs) and compliance with NAC, surgical complications, clinical and pathological staging were evaluated. All patients undergoing the protocol between January 2017 and June 2021 at Fukushima Medical University were enrolled. Results: Twenty cases were enrolled. No severe AEs were observed either preoperatively or perioperatively. Preoperative assessment of NAC showed no cases of progressive disease (PD). Radical resection was achieved in all cases. Histological therapeutic grading after NAC revealed one grade 3, four grade 2, three grade 1b, eleven grade la and one grade 0 among all cases. Conclusion: This study suggests that NAC for locally advanced rectal cancer is likely to be acceptable because there were no severe AEs pre- or perioperatively, radical resection was achieved in all cases, and there were no cases of PD.
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