Total pancreatectomy in a patient with a dermadrome caused by intraductal papillary mucinous neoplasm: A case report.

Introduction: Dermadrome is a term coined by combining the words "dermatology" and "syndrome," and it refers to dermatological symptoms that reflect visceral lesions.

Presentation Of Case: Herein, we present the case of an 83-year-old female patient who presented with generalized blistering and erythema during treatment for acute pancreatitis. She was referred to our dermatology department with worsening erythema, although the acute pancreatitis improved. The cause of the erythema was suspected to be drug-induced, infectious, or related to collagen disease; however, the exact cause was unknown. Computed tomography and endoscopic ultrasonography findings revealed a mixed-type intraductal papillary mucinous neoplasm (IPMN). Refractory erythema was suspected to have been caused by a dermadrome due to IPMN. Consequently, she was referred to our department. The main pancreatic duct was dilated along its entire length, and tumor extension was difficult to determine; therefore, a total pancreatectomy was performed. The postoperative course was uneventful, and erythema gradually improved. The histopathological evaluation indicated high-grade dysplasia of the IPMN.

Discussion: The patient's skin rash, which did not improve with treatment that included high-dose steroids, began to improve after surgery, and the disease was thought to be a dermadrome caused by IPMN.

Conclusion: We believe that this is the first reported case of IPMN with a dermadrome that resolved after a total pancreatectomy.