Radical cytoreductive surgery and hyperthermic intraperitoneal chemotherapy in the treatment of peritoneal sarcomatosis: Results from a reference center and considerations based on current evidence

[Display omitted] Peritoneal sarcomatosis is a rare disease, with multiple histological origins and poor overall prognosis. The option of radical cytoreductive surgery (CRS) with hyperthermic intraperitoneal chemotherapy (HIPEC) is controversial. The results of a surgical team experienced in these procedures are analyzed and discussed based on the available evidence. Study on a prospective database of patients with peritoneal sarcomatosis who underwent CRS and HIPEC, from 2016 to 2022, in a national reference center for sarcomas and peritoneal oncological surgery, who met the established inclusion/exclusion criteria. 23 patients were included in the study, with a median age of 53 years (6−68). Recurrent/persistent clinical presentation predominated (78.3%). Visceral origin (including GIST and non-GIST peritoneal) accounted for 47.8% of patients, compared to 43.5% uterine and 8.7% retroperitoneal. The median PCI was 17 (3−36), with CC0 cytoreduction of 87%. Postoperative morbidity (Dindo Clavien III–IV) of 13%, with no postoperative mortality in the series. Overall survival and disease-free survival at 5 years were 64% and 34%, respectively. Histological grade was the most influential prognostic factor for survival. The results of the series, with low morbidity, support the benefit of radical peritoneal oncological surgery in patients with peritoneal sarcomatosis after adequate selection, as long as it is performed in high-volume centers, experienced surgeons and expert multidisciplinary teams. However, the role of HIPEC remains to be demonstrated and pending future studies. La sarcomatosis peritoneal es una enfermedad rara, con múltiples orígenes histológicos y pronóstico global infausto. La opción de la cirugía citorreductora radical (CRS) con quimioterapia intraperitoneal hipertérmica (HIPEC) es controvertida. Se analizan y discuten los resultados de un equipo quirúrgico experimentado en estos procedimientos en base a la evidencia disponible. Estudio sobre una base de datos prospectiva de pacientes con sarcomatosis peritoneal intervenidos mediante CRS y HIPEC, desde 2016 a 2022, en un centro referente nacional en sarcomas y cirugía oncológica peritoneal, que cumplieron los criterios de inclusión/exclusión establecidos. Se incluyeron en el estudio a 23 pacientes, con mediana de edad de 53 años (6−68). Predominó la presentación clínica recurrente/persistente (78,3%). El origen visceral (incluyendo GIST y peritoneal no GIST) supuso el 47,8% de los pacientes