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  • Title: Imaging of pancreatic transplantation using portal venous and enteric exocrine drainage.
    Author: Dachman AH, Newmark GM, Thistlethwaite JR, Oto A, Bruce DS, Newell KA.
    Journal: AJR Am J Roentgenol; 1998 Jul; 171(1):157-63. PubMed ID: 9648780.
    Abstract:
    OBJECTIVE: We describe the normal radiologic appearance of pancreatic allografts transplanted using portal venous drainage with enteric drainage of exocrine secretions. We also describe the radiologic appearance of postsurgical complications. MATERIALS AND METHODS: Of 56 patients who received pancreatic transplants using the portal-enteric technique, 24 patients subsequently required radiologic examination for suspected complications involving the pancreatic allograft. Twenty-three patients underwent CT scanning; a total of 58 CT scans were obtained. Nine abdominal sonograms were obtained in five patients, and one patient underwent angiography. The radiologic appearance of each transplant and the complications were analyzed retrospectively and correlated with the clinical course. RESULTS: The most common indications for CT scanning were fever, elevated levels of serum amylase, and evaluation or follow-up of fluid collections. CT showed the normal and abnormal anatomy of the allograft. Abnormal findings seen in the 58 CT scans included fat stranding (30 scans), ascites (21 scans), peripancreatic fluid or pseudocyst (13 scans), and heterogeneity of the allograft (five scans). One patient had pancreatic infarction with pneumatosis and pneumoperitoneum. The allograft was obscured by bowel gas on three sonograms. Four sonograms showed no abnormalities (one Doppler sonogram showed the arterial supply and venous drainage), and one sonogram showed a pseudocyst. In the one patient who underwent angiography, imaging showed no arterial blood flow to the transplant. CONCLUSION: Pancreatic transplantation with portal venous drainage and enteric drainage of exocrine secretions and the complications of such transplantation were revealed with CT, sonography, and angiography. Knowledge of normal anatomic configuration will allow proper interpretation of normal and abnormal findings.
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