Unusual 18F-FDG PET-CT finding of paraneoplasic polymyositis in a patient with lung epidermoïd carcinoma

Abstract

We report the case of a 67 years old male patient, followed for epidermoïd carcinoma of the right lung, and hyper-eosinophilia on peripheral blood exploration. 18F-FDG positron emission tomography-computed tomography (18F-FDG PET-CT) performed for initial extension assessment showed, in addition to the intense hypermetabolism in the right upper pulmonary lobe related to the primary tumor and the mediastinal lymph node involvement (Fig. 1A), an unusually intense muscular hypermatbolism