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Objective Radiologic imaging of the allograft pancreatic duct dilatation is an uncommon multifactorial finding that is not well described. The purpose of this investigation is to determine the clinical correlation of this finding.
Design Retrospective study.
Setting University Hospital, USA.
Subjects One hundred forty five simultaneous pancreas-kidney transplants have been performed for treatment of type I diabetes mellitus and end-stage renal disease between February 1993 and December 1999 at the University of Miami.
Main outcome Measures In 5 recipients, the pancreatic duct was noted to be dilated by ultrasound 1-18 months post-transplant.
Results In all 5 recipients a Foley catheter was placed as the first line of treatment. This reduced the size of the pancreatic duct in one patient, who presented with normal serum amylase and lipase and hyperglycemia. A pancreas biopsy done with Foley catheter in place showed fibrosis with no evidence of rejection. Four patients with dilated pancreatic duct presented with increased serum amylase and lipase; however improvement of the pancreatic duct dilatation was seen only after anti-rejection therapy. One of the patients developed recurrence of pancreatic duct dilatation and a videourodynamic study subsequently demonstrated voiding with abdominal straining and no detrusor activity. He ultimately underwent enteric conversion with resolution of pancreatic duct dilatation.
Conclusions This infrequent complication of dilated transplant pancreatic duct could be multifactorial. It could suggest the diagnosis of reflux pancreatitis, which should resolve with bladder decompression. In fact, 1 patient presented with reflux pancreatitis caused by external sphincter detrusor pseudodyssynergia. However, this ultrasound finding may also be associated with pancreas rejection (4/5 patients).