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Παρασκευή 6 Οκτωβρίου 2017

Total Mesenteric Peritonectomy for Peritoneal Metastases (with video)

ABSTRACT

Background

Complete cytoreductive surgery (CRS), combining organ resection and peritonectomy, is the only potentially curative treatment for patients with peritoneal metastases (PM).1 ,2 Diffuse mesenteric PM usually represents a contraindication for CRS.3 This report presents a standardized total mesenteric peritonectomy, which provides a therapeutic option of complete CRS for patients with diffuse mesenteric PM.

Patient

A 73-year-old man had a diagnosis of PM caused by an urachal adenocarcinoma (signet cell type). Initial assessment found a 60-mm urachal tumor above the dome of the urinary bladder. Dedicated magnetic resonance imaging (MRI)4 and explorative laparoscopy confirmed the presence of diffuse mucinous PM suspected of pseudomyxoma peritonei arising from urachus. The patient was treated by a systemic induction chemotherapy including cisplatin, fluorouracil, and docetaxel, with an almost full regression of the PM shown on control MRI. The man then was treated with CRS and hyperthermic intraperitoneal chemotherapy.5

Technique

Exploration found persistent diffuse macro-nodular PM with a good response to chemotherapy, a 16/39 peritoneal cancer index,6 and no digestive tract or other organ involvement. The CRS procedure included complete urachus resection, together with appendicectomy, cholecystectomy, omentectomy, and a total parietal and mesenteric peritonectomy, with a completeness of cytoreduction score6 of 1, as illustrated in the video. At this writing, after 6 months of follow-up evaluation, the patient remains free of symptomatic peritoneal disease or local recurrence.

Conclusion

Total mesenteric peritonectomy can be safely performed with the reported technique irrespective of how widespread PM is along the mesentery as long as few small bowel serous membranes are involved.



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