Paraneoplastic myopathy in pancreatic cancer: a case report and literature review

Dermatomyositis (DM) and polymyositis (PM) are both immune-mediated inflammatory myopathies known to occur in paraneoplastic syndromes associated with a new diagnosis of malignancy, most commonly breast, ovarian, lung, pancreatic, stomach, colorectal, and Non-Hodgkin’s lymphoma1 in DM and breast, lu...

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Bibliographic Details
Main Authors: Jessica Joanne Padniewski, Elizabeth Nelson, Istiaq Mian, Andrew Laczniak, Samuel Ives, Rawad Nasr
Format: article
Language:EN
Published: Taylor & Francis Group 2021
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Online Access:https://doaj.org/article/737608112a204efd80d97bafb1469958
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Summary:Dermatomyositis (DM) and polymyositis (PM) are both immune-mediated inflammatory myopathies known to occur in paraneoplastic syndromes associated with a new diagnosis of malignancy, most commonly breast, ovarian, lung, pancreatic, stomach, colorectal, and Non-Hodgkin’s lymphoma1 in DM and breast, lung, bladder cancer, and Non-Hodgkin’s lymphoma in PM. 2,3,4 While inflammatory markers such as creatine kinase (CK) may be elevated with either DM or PM, marked elevation is rare. Herein, we report a case of newly diagnosed pancreatic cancer presenting with inflammatory myopathy and marked CK elevation. We review the frequency of PM as a paraneoplastic syndrome, the association with marked CK elevation, and the association with pancreatic cancer.