Short- and long-term morbidity of total parietal peritonectomy for advanced ovarian cancer

OBJECTIVE

Total parietal peritonectomy is gradually being recognized as a surgical option for advanced ovarian cancer; however, evidence regarding its efficacy and safety remains insufficient. Herein, we aimed to assess the short- and long-term post-operative safety profiles of total parietal peritonectomy.

METHODS

We reviewed the medical records of post-operative morbidity and mortality of patients who underwent cytoreductive surgery with total parietal peritonectomy for stage III and IV ovarian cancer between April 2018 and January 2023.

RESULTS

Fifty patients were enrolled in the study: 31 who underwent primary cytoreductive surgery and 19 who underwent interval cytoreductive surgery. The median age of all patients was 57 (range, 23-74) years. The median follow-up period was 22 (range, 3-59) months. Of 44 patients (88%) with stage IIIC/IV, 38 patients (76%) had high-grade serous carcinoma. The complete resection rates were 94%, 91%, and 100% in all patients, the primary cytoreductive surgery group, and the interval cytoreductive surgery group, respectively. There were 63 post-operative complication events overall, including 17 (27%) major complication events in 15 patients within 1 year post-operatively. Ten major complications occurred within 30 days of surgery, mainly in the primary cytoreductive surgery group (9 cases). Regarding complication type, the most frequent major event was pleural effusion (3 cases, 7%). After 30 days, there were a total of 17 all-grade complication events, of which ileus and hydronephrosis were major complications in 3 cases each (18%). There were no mortalities related to cytoreductive surgery. The scheduled adjuvant chemotherapy could be completed in 96% of patients.

CONCLUSIONS

Total parietal peritonectomy is a feasible procedure for managing advanced ovarian cancer. Short- and long-term complications may include pleural effusion and ileus/hydronephrosis, respectively.

Retrospective Analysis of Total Parietal Peritonectomy Without Systematic Lymphadenectomy for Advanced Epithelial Ovarian Cancer

BACKGROUND/AIM

Total parietal peritonectomy (TPP) is a surgical procedure used for complete resection of microscopic peritoneal dissemination. This study analyzed the perioperative complications that developed when omitting systematic lymphadenectomy from TPP.

PATIENTS AND METHODS

We retrospectively analyzed perioperative complications in epithelial ovarian cancer patients with stage IIIB-IVB who underwent TPP during primary and interval cytoreductive surgeries between April 2018 and October 2021.

RESULTS

Thirty-three patients were enrolled in the study. The median patient age was 62 years. Of 31 patients (94%) with stage IIIC/IV disease, 24 (73%) had high-grade serous carcinoma. The median operative time and blood loss were 447 min and 2,831 ml, respectively. Complete tumor resection was performed in 30 patients (91%). Only five patients underwent partial lymphadenectomy for clinical metastatic lymph nodes. Further, grade 3 complications were observed in seven (21%) patients, and there were no fatal events in this study. Three patients (9%) had ureteric injuries, which was the most frequent complication in this study. Only one patient developed an intra-abdominal infection due to ascites. In this case, partial para-aortic and pelvic lymphadenectomies were performed.

CONCLUSION

TPP without systematic lymphadenectomy reduces the frequency of perioperative complications associated with ascites.

Total parietal peritonectomy in primary debulking surgery for advanced ovarian cancer

The object of this study is to evaluate the clinical safety and efficacy of total parietal peritonectomy (TPP) in primary debulking surgery (PDS) for advanced ovarian cancer. This retrospective single-center study analyzed 16 patients with FIGO stages IIIC-IVB epithelial ovarian cancer who underwent TPP in PDS and achieved macroscopically complete resection between April 2015 and June 2016. The median age of 16 patients was 52.5 years old. 12 were in stage IIIC and 4 were in stage IV. Regarding intraoperative complications, unintended diaphragm perforation was observed in two patients. Regarding postoperative complications (Clavien-Dindo classification grade 3-5) before the adjuvant chemotherapy, lymph cysts occured in 3 patients, intra-abdominal abscess in 3, ileus in 2, pancreatic fistula in 1 and temporary kidney failure in 1. Regarding postoperative complications (grade 3-5) after the initiation of adjuvant chemotherapy, diaphragmatic hernia occured in 1 patient, ileus in 2 and intra-abdominal abscess in 2. Except 1 patient who relapsed approximately one month from surgery and died, the other 15 patients overcamed complications and recovered without problems in daily life. This analysis was conducted 3 years after all patients underwent PDS, with the 3-year progression-free and overall survival of 62.5% (95% confidence interval [CI], 34.9-81.1) and 87.5% (95 %CI, 58.6-96.7), respectively. Based on the above results, TPP in PDS may improve the prognosis compared to previous reports such as LION trial. On the other hand, complications may increase. Therefore, further studies are necessary on its safety and efficacy.