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  • Title: Treatment response and prognosis of POEMS syndrome coexisting with Castleman disease.
    Author: Suichi T, Misawa S, Sekiguchi Y, Shibuya K, Tsuneyama A, Suzuki YI, Nakamura K, Kano H, Kuwabara S.
    Journal: J Neurol Sci; 2020 Jun 15; 413():116771. PubMed ID: 32172013.
    Abstract:
    POEMS (polyneuropathy, organomegaly, endocrinopathy monoclonal gammopathy, and skin changes) syndrome is occasionally associated with Castleman disease (CD) and their prognosis is considered as poorer than that in POEMS alone patients. To elucidate recent prognosis of POEMS syndrome coexisting with CD, we reviewed clinical data of 102 patients with POEMS syndrome treated at our institution between 2000 and 2018 and compared clinical characteristics, response to treatment, and prognosis between POEMS patients with biopsy-proven CD (POEMS-CD) and those without it. Fourteen POEMS-CD patients and 56 POEMS alone patients were identified, and the remaining 32 patients with unbiopsied lymphadenopathy were excluded. POEMS-CD patients significantly showed earlier onset and less severe neuropathic symptoms. Most of the POEMS-CD patients were treated with thalidomide and dexamethasone (n = 10, 71%), and subsequently received autologous stem cell transplantation (n = 6, 43%). Response to thalidomide was better in patients with POEMS-CD than those with POEMS alone (90% vs 43% clinical response, [p = .012]; 80% vs 45% normalization of serum VEGF levels, [p = .079]). The 10-year overall survival (95% confidence interval) was 89% (50-98%) in POEMS-CD patients and 61% (42-77%) in those with POEMS alone. POEMS syndrome associated with CD constitutes a subgroup of POEMS syndromes characterized by earlier onset, mild polyneuropathy, and favorable response to treatment. Recognition of this subgroup is significant for determination of therapeutic strategy.
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