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Neuropathy in lymphoma: a relationship between the pattern of neuropathy, type of lymphoma and prognosis?
  1. Karine Viala (karine.viala{at}psl.aphp.fr)
  1. Hôpital de la Salpêtrière, France
    1. Anthony Béhin (anthony.behin{at}psl.aphp.fr)
    1. hôpital de la Salpêtrière, France
      1. Thierry Maisonobe (thierry.maisonobe{at}psl.aphp.fr)
      1. hôpital de la Salpêtrière, France
        1. Jean-Marc Leger (jean-marc.leger{at}psl.ap-hop-paris.fr)
        1. Hopital Pitie-Salpetriere, France
          1. Tanya stojkovic (tanya.stojkovic{at}psl.aphp.fr)
          1. hôpital de la Salpêtrière, France
            1. Frédéric Davi (fred.davi{at}psl.aphp.fr)
            1. hôpital de la Salpêtrière, France
              1. Véronique Leblond (veronique.leblond{at}psl.aphp.fr)
              1. hôpital de la Salpêtrière, France
                1. Pierre Bouche (pierre.bouche{at}psl.aphp.fr)
                1. hôpital de la Salpêtrière, France

                  Abstract

                  Background: Neuropathies associated with lymphoma (NAL) are rare and present a great clinical heterogeneity, making them difficult to diagnose and worsening their prognosis. Objectives: 1) to report the different patterns of NAL and discuss the mechanisms encountered; 2) to determine the relationship between a given type of lymphoma and a specific type of neuropathy; and 3) to assess the prognosis of NAL.

                  Methods: Among 150 patients with lymphoma and neuropathy, we selected 26 patients in whom the neuropathy was not related to drug-induced or IgM-anti-MAG neuropathies. The pattern of neuropathy was defined in terms of its clinical and electrophysiological features. Neurological improvement, hematological remission and occurrence of death were taken into account to determine the prognosis.

                  Results: Thirteen patients (50%) had a demyelinating polyneuropathy (demyelinating PNP), 7 (27%) had a radiculopathy linked to proximal root tumoral infiltration, and 6 (23%) had an axonal multiple mononeuropathy (MM) related to distal lymphomatous infiltration or to paraneoplastic microvasculitis. Hodgkin's lymphoma was only associated with demyelinating PNP. High-grade B-cell lymphoma was strongly associated with radiculopathy. Neurological improvement was observed in 69% of demyelinating PNP patients, 29% of radiculopathy patients, and 50% of MM patients. Hematological remission was observed in 46% of demyelinating PNP patients, 29% of radiculopathy patients and 83% of MM patients.

                  Conclusions: Demyelinating PNP, the most frequently observed neuropathy in this study, had the best neurological prognosis. Chemotherapy combined with immune-mediated treatment was the most effective treatment in this group. Identifying the type and mechanism of NAL is crucial in order to define the therapeutic strategy and improve the prognosis.

                  • Chronic inflammatory demyelinating polyneuropathy
                  • lymphoma
                  • multiple mononeuropathy
                  • radiculopathy

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