Abstract
Traumatic neuromas may develop after injury to nerve fibers encased in Schwann cells. The incidence of symptomatic neural tumors appears to be low after orthotopic liver transplantation (OLT). Only two cases of biliary stricture caused by infiltrating traumatic neuroma have been described previously. We report two new cases of biliary tract obstruction after OLT that failed to respond to percutaneous balloon dilatation and were corrected by a resection of the bile duct stricture followed by biliary reconstruction with a Roux-en-Y jejunal loop. The first patient (17 months after OLT) had a traumatic neuroma appearing as a distinct mass with nerve bundles confirmed histologically; the traumatic neuroma in the second patient (5 months after OLT) was a nerve stump with infiltration of nervous elements in the bile duct. Both patients recovered without complications. Traumatic neuromas should be considered in the differential diagnosis of late biliary stricture after OLT, in particular when not responding to percutaneous dilatation or stenting.
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