1. Prognostic Factors in Pseudomyxoma Peritonei with Emphasis on the Predictive Role of Peritoneal Cancer Index and Tumor Markers
- Author
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Sebastian Blaj, David Dora, Zoltan Lohinai, Zoltan Herold, Attila Marcell Szasz, Jonas Herzberg, Roland Kodacsi, Saher Baransi, Hans Jürgen Schlitt, Matthias Hornung, Jens M. Werner, Przemyslaw Slowik, Miklos Acs, and Pompiliu Piso
- Subjects
ca-19-9 antigen ,Cancer Research ,peritoneal cancer index ,tumor ,pseudomyxoma peritonei ,Oncology ,carcinoembryonic antigen ,low-grade appendiceal mucinous neoplasms ,cytoreductive surgery ,biomarkers ,hyperthermic intraperitoneal chemotherapy - Abstract
Background: Pseudomyxoma peritonei (PMP) is a rare peritoneal condition where mucus-secreting tumorous cells progressively produce a thick, gelatin-like substance. The prognosis of patients with PMP is determined by the degree of cellularity within the mucin (low-grade (LAMN) vs. high-grade (HAMN) histologic features) and by the extent of the disease. Methods: Prognostic relevance of tumor markers CA19-9 and CEA, gender, Peritoneal Cancer Index (PCI), and completeness of cytoreduction (CC) after cytoreductive surgery were evaluated on 193 consecutive PMP patients, based on a retrospective analysis of prospectively gathered data from a German tertial referral center. Results: We demonstrated that low PCI, CC0 status, low-grade histology, and female gender were independent positive prognostic factors for both overall survival (OS) and progression-free survival (PFS). Furthermore, LAMN patients with achieved CC0 status show significantly better OS and PFS compared to those with CC1 status (p = 0.0353 and p = 0.0026 respectively). In contrast, the duration and drug of hyperthermic intraperitoneal chemotherapy (HIPEC) were not prognostic in any comparison. Increased CA19-9 and CEA levels were significantly associated with HAMN cases, but also predicted recurrence in patients with low-grade histologies. Conclusion: Our study confirmed the prognostic role of tumor markers and emphasized the importance of CC status and PCI in a large cohort of PMP- and LAMN patients.
- Published
- 2023
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