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Culture and Imaging of Ex Vivo Organotypic Pseudomyxoma Peritonei Tumor Slices from Resected Human Tumor Specimens
Published on: December 9, 2022
Pseudomyxoma peritonei arising from colonic polyps
P J G Goldstein1, J Cabanas, R G da Silva
1Washington Cancer Institute, 106 Irving Street NW, Washington, DC 20010, USA.
Aims:
Pseudomyxoma peritonei may have as its primary site a mucinous gastrointestinal adenoma or carcinoma that gains access to the peritoneal cavity. This manuscript describes this disease arising from a benign or malignant colonic polyp.
Methods:
From a database of over 1000 pseudomyxoma peritonei patients and colorectal carcinomatosis patients, three cases were identified in which the primary tumor site was a colonic polyp. The clinical history and course of these patients were studied.
Results:
In a review of the clinical management of these patients, all three had an event whereby neoplastic cells from the surface of the colonic polyp could have gained access to the free peritoneal cavity. The patients developed the characteristic pseudomyxoma peritonei syndrome. All three patients were treated with cytoreductive surgery plus perioperative hyperthermic intraperitoneal chemotherapy.
Conclusions:
Colonic polyps can serve as a source of dysplastic cells whereby pseudomyxoma peritonei can result. Caution to prevent seeding to the free peritoneal cavity during surgery for colonic polyps should be observed. If pseudomyxoma peritonei develops, cytoreductive surgery and perioperative intraperitoneal chemotherapy should be considered for treatment.
Insights
Colonic polyps can lead to pseudomyxoma peritonei (PMP). Surgical prevention of cell seeding during polyp removal is crucial. Treatment for PMP involves cytoreductive surgery and hyperthermic intraperitoneal chemotherapy.
Area of Science:
- Gastroenterology
- Surgical Oncology
- Oncology
Background:
- Pseudomyxoma peritonei (PMP) is a rare condition often originating from mucinous gastrointestinal tumors.
- The primary source of PMP can be a colonic adenoma or carcinoma that spreads to the peritoneal cavity.
Observation:
- This study identified three cases of PMP originating from colonic polyps.
- Neoplastic cells from the colonic polyp surface gained access to the peritoneal cavity in all three cases.
- Patients presented with the characteristic pseudomyxoma peritonei syndrome.
Findings:
- Colonic polyps, both benign and malignant, can be the primary source of pseudomyxoma peritonei.
- All patients underwent cytoreductive surgery combined with perioperative hyperthermic intraperitoneal chemotherapy.
- The study highlights the potential for colonic polyps to seed neoplastic cells into the peritoneal cavity.
Implications:
- Surgical techniques for colonic polyp removal should emphasize preventing peritoneal seeding.
- Cytoreductive surgery and hyperthermic intraperitoneal chemotherapy are effective treatment options for PMP.
- Early identification and management of colonic polyps are essential to prevent PMP development.
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