Indications for cytoreductive surgery and hyperthermic intraperitoneal chemotherapy in elderly patients with peritoneal malignancy

Purpose A combination of cytoreductive surgery and hyperthermic intraperitoneal chemotherapy (CRS + HIPEC) is effective for some peritoneal malignancies. However, the indications for elderly patients remain unclear, with substantial postoperative morbidity and mortality being problematic. Materials Clinical data were analyzed in 42 patients undergoing CRS + HIPEC for peritoneal malignancy. The primary tumor was located in the appendix in 32 cases and elsewhere in 10 cases. Operative results and survival data were compared between patients aged >= 70 and < 70 years. Results Fourteen patients were older than 70 years. Elderly patients had a higher peritoneal cancer index (32.0 vs. 21.5), higher CA19-9 level (189.0 vs. 28.1), and higher frequency of grade 4-5 complications (5/9 vs. 2/26) than the younger patients. Grade 4-5 respiratory failure occurred in three elderly patients. There was a significant difference of postoperative survival between the elderly patients and younger patients, with 5-year survival rates being 41.3 and 74.2%, respectively (p = 0.0166). The poor prognosis of elderly patients was related to the higher frequency of grade 4-5 complications. Conclusions Elderly patients were referred for treatment with more advanced disease than younger patients. An age = 70 years was associated with more frequent grade 4-5 complications and worse survival. Performing CRS + HIPEC in elderly patients should be considered carefully due to the risk of severe complications, especially respiratory failure.