{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,2]],"date-time":"2026-10-02T09:42:29Z","timestamp":1790934149320,"version":"4.1.0"},"reference-count":57,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2025,2,12]],"date-time":"2025-02-12T00:00:00Z","timestamp":1739318400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Current Oncology"],"abstract":"<jats:p>The peritoneum is the second most common site of metastasis in patients with pancreatic ductal adenocarcinoma (PDAC). Up to half of all patients that undergo curative-intent resection eventually develop peritoneal metastasis (PM), which accounts for significant morbidity and drives mortality. Despite recent advances in management, PM is associated with very poor prognosis, which is often measured in weeks to months. Clinical manifestations including bowel obstruction, ascites, and urinary obstruction have profound impact on quality of life. Even with relatively advanced disease, PM often remains occult on imaging and thus tend to be underdiagnosed and understudied. Many patients with peritoneal-only PM are excluded from clinical trials because response cannot be measured by standard radiographic criteria. Furthermore, as patients with PM are not eligible for surgical resection and low-volume peritoneal disease is often not amenable to percutaneous biopsy, tissue samples for peritoneal-specific translational studies are limited. Intraperitoneal therapeutics have been proposed as an attractive option for PM, as better penetration of tumor tissue can be achieved with less systemic toxicity compared with intravenous chemotherapy. Heated intraperitoneal chemotherapy (HIPEC), typically combined with cytoreductive surgery (CRS), is an option for select patients with PM from gynecologic or gastrointestinal primary, and for patients with primary peritoneal mesothelioma. However, the incorporation of locoregional therapy for PM in patients with PDAC has been poorly studied given the aggressive nature of pancreatic cancer and overall poor prognosis. With recent advances in existing treatment options, there may be a subset of patients who may derive benefits from locoregional control with cytoreduction and\/or intraperitoneal chemotherapy. Critically, additional work is needed to determine PM-favorable clinical and tumoral predictive biomarkers to identify patients who may benefit from a more aggressive approach. We describe the current state of management of patients with peritoneal metastasis from PDAC and review the available data exploring peritoneal-directed therapy with cytoreductive surgery and\/or intraperitoneal chemotherapy.<\/jats:p>","DOI":"10.3390\/curroncol32020103","type":"journal-article","created":{"date-parts":[[2025,2,12]],"date-time":"2025-02-12T03:41:57Z","timestamp":1739331717000},"page":"103","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Management of Peritoneal Metastasis in Patients with Pancreatic Ductal Adenocarcinoma"],"prefix":"10.3390","volume":"32","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5413-2768","authenticated-orcid":false,"given":"Grace","family":"Wu","sequence":"first","affiliation":[{"name":"Northwell Health, New Hyde Park, NY 11040, USA"},{"name":"Department of Surgery, Zucker School of Medicine at Hofstra\/Northwell, Manhasset, NY 11030, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Oliver J.","family":"Standring","sequence":"additional","affiliation":[{"name":"Northwell Health, New Hyde Park, NY 11040, USA"},{"name":"Department of Surgery, Zucker School of Medicine at Hofstra\/Northwell, Manhasset, NY 11030, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6451-712X","authenticated-orcid":false,"given":"Daniel A.","family":"King","sequence":"additional","affiliation":[{"name":"Northwell Health, New Hyde Park, NY 11040, USA"},{"name":"Northwell Health Cancer Institute, Lake Success, NY 11042, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sepideh","family":"Gholami","sequence":"additional","affiliation":[{"name":"Northwell Health, New Hyde Park, NY 11040, USA"},{"name":"Department of Surgery, Zucker School of Medicine at Hofstra\/Northwell, Manhasset, NY 11030, USA"},{"name":"Northwell Health Cancer Institute, Lake Success, NY 11042, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Craig E.","family":"Devoe","sequence":"additional","affiliation":[{"name":"Northwell Health, New Hyde Park, NY 11040, USA"},{"name":"Northwell Health Cancer Institute, Lake Success, NY 11042, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3654-8601","authenticated-orcid":false,"given":"Cornelius A.","family":"Thiels","sequence":"additional","affiliation":[{"name":"Department of Surgery, Mayo Clinic, Rochester, MN 55905, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7753-097X","authenticated-orcid":false,"given":"Travis E.","family":"Grotz","sequence":"additional","affiliation":[{"name":"Department of Surgery, Mayo Clinic, Rochester, MN 55905, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matthew J.","family":"Weiss","sequence":"additional","affiliation":[{"name":"Northwell Health, New Hyde Park, NY 11040, USA"},{"name":"Department of Surgery, Zucker School of Medicine at Hofstra\/Northwell, Manhasset, NY 11030, USA"},{"name":"Northwell Health Cancer Institute, Lake Success, NY 11042, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Richard L.","family":"Whelan","sequence":"additional","affiliation":[{"name":"Northwell Health, New Hyde Park, NY 11040, USA"},{"name":"Department of Surgery, Zucker School of Medicine at Hofstra\/Northwell, Manhasset, NY 11030, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mustafa","family":"Raoof","sequence":"additional","affiliation":[{"name":"Department of Surgery, City of Hope National Medical Center, Duarte, CA 91010, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5990-0124","authenticated-orcid":false,"given":"Danielle K.","family":"DePeralta","sequence":"additional","affiliation":[{"name":"Northwell Health, New Hyde Park, NY 11040, USA"},{"name":"Department of Surgery, Zucker School of Medicine at Hofstra\/Northwell, Manhasset, NY 11030, USA"},{"name":"Northwell Health Cancer Institute, Lake Success, NY 11042, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,2,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"12","DOI":"10.3322\/caac.21820","article-title":"Cancer Statistics, 2024","volume":"74","author":"Siegel","year":"2024","journal-title":"CA Cancer J. 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