Lymphomatoid Granulomatosis with Paraneoplastic Polymyositis: A Rare Malignancy with Rare Complication.

Lymphomatoid granulomatosis is a rare Epstein-Barr virus driven lymphoproliferative disease. It most commonly presents with symptoms of lung involvement such as cough, chest tightness, and dyspnea or constitutional symptoms of weight loss, malaise, and fever. The diagnosis is obtained by biopsy and histopathology. Here we report the case of a 31-year-old male who presented with weight loss, rash, and weakness and was diagnosed with lymphomatoid granulomatosis with paraneoplastic polymyositis. We explore the relationship of Epstein-Barr virus with inflammatory myopathy and discuss paraneoplastic inflammatory myopathy.