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  • Title: Colonic varices treated with embolization after pancreatoduodenectomy with portal vein resection: a case report.
    Author: Kuwabara S, Matsumoto J, Tojima H, Wada H, Kato K, Tabata Y, Ichinokawa M, Yoshioka T, Murakawa K, Ikeda A, Ohtake S, Ono K.
    Journal: Surg Case Rep; 2020 Jun 03; 6(1):126. PubMed ID: 32494925.
    Abstract:
    BACKGROUND: Pancreatoduodenectomy with resection of the portal vein or superior mesenteric vein confluence has been safely performed in patients with pancreatic head cancer associated with infiltration of the portal vein or superior mesenteric vein. In recent years, left-sided portal hypertension, a late postoperative complication, has received focus owing to increased long-term survival with advances in chemotherapy. Left-sided hypertension may sometimes cause fatal gastrointestinal bleeding because of the rupture of gastrointestinal varices. Here, we present a case of colonic varices caused by left-sided portal hypertension after pancreatoduodenectomy with portal vein resection. CASE PRESENTATION: A 69-year-old man diagnosed with pancreatic head cancer was referred to our department for surgery after undergoing chemotherapy with nine courses of gemcitabine and nab-paclitaxel. Computed tomography showed a mass 25 mm in diameter and in contact with the portal vein. He had undergone subtotal stomach-preserving pancreatoduodenectomy with portal vein resection. Four centimeters of the portal vein had been resected, and end-to-end anastomosis was performed without splenic vein reconstruction. We had to completely resect the right colic vein, accessary right colic vein, and middle colic vein due to tumor invasion. The pathological diagnosis was ypT3, ypN1a, ypM0, and ypStageIIB, and he was administered TS-1 as postoperative adjuvant chemotherapy. Seven months after therapeutic radical surgery, he presented with melena with progressive anemia. Computed tomography revealed transverse colonic varices. He was offered interventional radiology. Trans-splenic arterial splenic venography showed that transverse colonic varices had developed as collateral circulation of the splenic vein and inferior mesenteric vein system. An embolic substance was injected into the transverse colonic varices, which halted the progression of the anemia caused by melena. Fifteen months after therapeutic radical surgery, local recurrence of the tumor occurred; he died 28 months after the surgery. CONCLUSIONS: When subtotal stomach-preserving pancreatoduodenectomy with portal vein resection is performed without splenic vein reconstruction, colonic varices may result from left-sided portal hypertension. Interventional radiology is an effective treatment for gastrointestinal bleeding due to colonic varices, but it is important to be observant for colonic necrosis and new varices.
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