Polyneuropathy as paraneoplastic syndrome in a patient with metastatic diffuse large B-cell lymphoma

Paraneoplastic syndromes are multisystemic diseases that are seen in association with solid organ tumors and lymphomas. Immune-mediated polyneuropathy, encephalopathy, cerebellar degeneration, and Guillain–Barre syndrome have all been described as paraneoplastic neurologic disorders. Clinical symptoms may appear before the diagnosis of associated malignancy creating diagnostic confusion. Tumor-derived peptides, hormones, and mediators are shown to be associated with paraneoplastic syndromes. Herein, we present an unusual case of stage 4 diffuse large B-cell lymphoma with cutaneous metastatic nodules presenting initially as paraneoplastic polyneuropathy.