Implications of Pathologic Findings in Cytoreductive Surgery Specimens on Treatment of Colorectal Peritoneal Metastases: Results of a Prospective Multicentric Study. Issue 5 (25th January 2021)
- Record Type:
- Journal Article
- Title:
- Implications of Pathologic Findings in Cytoreductive Surgery Specimens on Treatment of Colorectal Peritoneal Metastases: Results of a Prospective Multicentric Study. Issue 5 (25th January 2021)
- Main Title:
- Implications of Pathologic Findings in Cytoreductive Surgery Specimens on Treatment of Colorectal Peritoneal Metastases: Results of a Prospective Multicentric Study
- Authors:
- Bhatt, Aditi
Benzerdjeb, Nazim
Passot, Guillaume
Kammar, Praveen
Mehta, Sanket
Laplace, Nathalie
Cotte, Eddy
Glehen, Olivier - Abstract:
- Abstract : Supplemental Digital Content is available in the text. Abstract : BACKGROUND: A surgical peritoneal cancer index of >20 is often used to exclude patients from cytoreductive surgery for colorectal peritoneal metastases. The pathologic peritoneal cancer index in these patients may be <20. OBJECTIVE: The purpose of this study was to compare the pathologic and surgical findings and to look at potential pathologic prognostic factors. DESIGN: This is a prospective observational study including patients undergoing cytoreductive surgery. SETTINGS: The study was carried out at 3 peritoneal surface malignancy centers, 1 in France and 2 in India. PATIENTS: One-hundred patients were included from July 1, 2018, to June 30, 2019. MAIN OUTCOME MEASURES: The pathologic peritoneal cancer index, peritoneal disease distribution, pathologic response to chemotherapy, factors affecting them and their relation with surgical findings, and potential prognostic value were explored. RESULTS: Ninety percent had colonic primaries. Fifty-one percent had left-sided tumors. The median surgical peritoneal cancer index was 4 (range, 0–35). Upper regions were involved in 32% and small bowel regions in 26%, and their involvement increased with a higher peritoneal cancer index ( p < 0.001). The median pathologic peritoneal cancer index was 2 (range, 0–27) and was less than the surgical peritoneal cancer index in 57%. A pathologic complete response was obtained in 25%. Patients with pathologicAbstract : Supplemental Digital Content is available in the text. Abstract : BACKGROUND: A surgical peritoneal cancer index of >20 is often used to exclude patients from cytoreductive surgery for colorectal peritoneal metastases. The pathologic peritoneal cancer index in these patients may be <20. OBJECTIVE: The purpose of this study was to compare the pathologic and surgical findings and to look at potential pathologic prognostic factors. DESIGN: This is a prospective observational study including patients undergoing cytoreductive surgery. SETTINGS: The study was carried out at 3 peritoneal surface malignancy centers, 1 in France and 2 in India. PATIENTS: One-hundred patients were included from July 1, 2018, to June 30, 2019. MAIN OUTCOME MEASURES: The pathologic peritoneal cancer index, peritoneal disease distribution, pathologic response to chemotherapy, factors affecting them and their relation with surgical findings, and potential prognostic value were explored. RESULTS: Ninety percent had colonic primaries. Fifty-one percent had left-sided tumors. The median surgical peritoneal cancer index was 4 (range, 0–35). Upper regions were involved in 32% and small bowel regions in 26%, and their involvement increased with a higher peritoneal cancer index ( p < 0.001). The median pathologic peritoneal cancer index was 2 (range, 0–27) and was less than the surgical peritoneal cancer index in 57%. A pathologic complete response was obtained in 25%. Patients with pathologic complete response received more antiepidermal growth factor receptor therapy ( p = 0.008); more leucovorin, 5-fluorouracil, and oxaliplatin; and folinic acid, fluorouracilirin, irinotecan hydrochloride, and oxaliplatin ( p < 0.001). In 7 patients with a surgical peritoneal cancer index of >20, pathologic peritoneal cancer index was <20 in 4 patients. Disease in the primary tumor/anastomotic site was found in ≈80%. LIMITATIONS: Survival outcomes are not available. CONCLUSIONS: Surgical peritoneal cancer index of >20 should not be the sole factor to exclude patients from surgery, especially in responders to systemic therapies. The pathologic peritoneal cancer index, pathologic response to systemic chemotherapy, and disease distribution in the peritoneal cavity should be meticulously documented. Correlation with survival will define their future prognostic value. The primary anastomotic site is a common site for peritoneal disease and should be carefully evaluated in all patients. See Video Abstract at http://links.lww.com/DCR/B490 . IMPLICACIONES DE LOS HALLAZGOS PATOLÓGICOS EN MUESTRAS DE CIRUGÍA CITORREDUCTORA EN EL TRATAMIENTO DE METÁSTASIS PERITONEALES COLORRECTALES: RESULTADOS DE UN ESTUDIO PROSPECTIVO MULTICÉNTRICO: ANTECEDENTES: Una ICP quirúrgica de >20 se utiliza a menudo para excluir a los pacientes de la cirugía citorreductora por metástasis peritoneales colorrectales. La PCI patológica en estos pacientes puede ser <20. OBJETIVOS: Comparar los hallazgos patológicos y quirúrgicos y observar los posibles factores pronósticos patológicos. DISEÑO: Se trata de un estudio observacional prospectivo que incluye a pacientes sometidos a cirugía citorreductora. AJUSTE: El estudio se llevó a cabo en tres centros de malignidad de la superficie peritoneal, 1 en Francia y 2 en India. PACIENTES: Se incluyeron 100 pacientes desde el 1 de julio de 2018 al 30 de junio de 2019. INTERVENCIONES: No hubo intervención terapéutica. PRINCIPALES MEDIDAS DE RESULTADO: Se exploró la ICP patológica, la distribución de la enfermedad peritoneal, la respuesta patológica a la quimioterapia, los factores que la afectan y su relación con los hallazgos quirúrgicos y el valor pronóstico potencial. RESULTADOS: El noventa por ciento tenía lesiones primarias colónicas. El 51% tenía tumores del lado izquierdo. La mediana de la ICP quirúrgica 4 [0-35]. Las regiones superiores estuvieron involucradas en el 32% y las regiones del intestino delgado en un 26% y su participación aumentó con una ICP más alta (p <0, 001). La mediana de la ICP patológica fue 2 [0-27] y fue menor que la ICP quirúrgica en el 57%. Se obtuvo respuesta patológica completa en el 25%. Los pacientes con respuesta patológica completa recibieron más terapia anti-EGFR (p = 0, 008) y más FOLFOX y FOLFIRINOX (p <0, 001). En 7 pacientes con una ICP quirúrgica de> 20, la ICP patológica fue menor de 20 en 4 pacientes. Se encontró enfermedad en el tumor primario/anastomósis en casi el 80%. LIMITACIONES: Los resultados de supervivencia no están disponibles. CONCLUSIONES: La ICP quirúrgica de> 20 no debería ser el único factor para excluir a los pacientes de la cirugía, especialmente en los que responden a las terapias sistémicas. La PCI patológica, la respuesta patológica a la quimioterapia sistémica y la distribución de la enfermedad en la cavidad peritoneal deben documentarse meticulosamente. La correlación con la supervivencia definirá su valor pronóstico futuro. El sitio anastomótico primario es un sitio común de enfermedad peritoneal y debe evaluarse cuidadosamente en todos los pacientes. Consulte Video Resumen en http://links.lww.com/DCR/Bxxx . (Traducción—Dr. Gonzalo Hagerman ) … (more)
- Is Part Of:
- Diseases of the colon & rectum. Volume 64:Issue 5(2021)
- Journal:
- Diseases of the colon & rectum
- Issue:
- Volume 64:Issue 5(2021)
- Issue Display:
- Volume 64, Issue 5 (2021)
- Year:
- 2021
- Volume:
- 64
- Issue:
- 5
- Issue Sort Value:
- 2021-0064-0005-0000
- Page Start:
- 534
- Page End:
- 544
- Publication Date:
- 2021-01-25
- Subjects:
- Colorectal peritoneal metastases -- Cytoreductive surgery -- Pathologic peritoneal cancer index -- Pathologic response to chemotherapy -- Peritoneal disease distribution
Colon (Anatomy) -- Diseases -- Periodicals
Rectum -- Diseases -- Periodicals
Colonic Diseases -- Periodicals
Colorectal Surgery -- Periodicals
616.34 - Journal URLs:
- http://journals.lww.com/dcrjournal/Pages/default.aspx ↗
http://journals.lww.com ↗ - DOI:
- 10.1097/DCR.0000000000001904 ↗
- Languages:
- English
- ISSNs:
- 0012-3706
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 3598.200000
British Library DSC - BLDSS-3PM
British Library STI - ELD Digital store - Ingest File:
- 19778.xml