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POEMS (polyneuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and skin changes) syndrome is a rare multisystem disease characterized by plasma cell dyscrasia and overproduction of vascular endothelial growth factor, which is related to disease activity. Recent treatment strategies have improved survival of patients suffering from this disorder; however, ischemic stroke remains a poor prognostic factor. POEMS patients with ischemic stroke frequently develop cerebral large artery stenosis/occlusion, followed by progressive stroke. Post literature review, we present an ischemic stroke case of quasi-moyamoya disease linked with this syndrome that was successfully treated with surgical revascularization. A 41-year-old woman diagnosed with POEMS syndrome developed progressive ischemic stroke due to quasi-moyamoya disease, despite decreased vascular endothelial growth factor level with lenalidomide and dexamethasone treatment. She underwent superficial temporal artery to middle cerebral artery bypass with encephalo-duro-myo-synangiosis bilaterally. The postoperative course was uneventful. Two years and five months after the stroke, neuroimaging demonstrated bypass patency, neovascularization after encephalo-duro-myo-synangiosis, and no recurrence of stroke. Our case is the first to report successful surgical revascularization for a POEMS patient. Surgical revascularization may be a useful treatment option for patients with quasi-moyamoya disease associated with POEMS syndrome, especially for those who develop refractory ischemic stroke despite reduced vascular endothelial growth factor level., Competing Interests: The authors have no conflicts of interest to disclose.

Polyneuropathy, organomegaly, endocrinopathy, M-protein, skin changes (POEMS) syndrome is a rare plasma cell dyscrasia disease involving multiple organs combined with idiopathic non-cirrhotic portal hypertension. It has been reported only four times in the English literature. Here, we present the first case of a 62-year-old male POEMS syndrome patient with portal hypertension treated with the transjugular intrahepatic portosystemic shunt (TIPS), after he presented with a 10-day history of melena. The diagnosis of POEMS syndrome was given because the patient presented with polyneuropathy, monoclonal plasma cell proliferative disorder, sclerotic bone lesions, splenomegaly, lymphadenopathy, ascites, hypothyroidism, and hyperpigmentation. The presence of portal hypertension was confirmed by esophageal varices, congested and edematous stomach body, splenomegaly, and transudate ascites in which the serum-ascites albumin gradient of ascites fluid was over 11 g/L (a concentration considered to be associated with POEMS syndrome), as no other causes were found. The patient fasted and received conservative drug treatments on admission, but symptoms of melena soon recurred within 1 week after resuming his diet. After TIPS and venous embolization were performed, symptoms of bleeding were effectively controlled, while the patient subsequently developed hepatic encephalopathy, which ultimately led to death. The presence of gastrointestinal bleeding in POEMS syndrome with idiopathic non-cirrhotic portal hypertension indicates a poor prognosis. Given that this was the first patient to receive TIPS, and although the incidence of hepatic encephalopathy has increased, TIPS is still acceptable for refractory variceal bleeding., Competing Interests: None

Polyneuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and skin changes (POEMS) syndrome is a multisystem autoinflammatory disease due to an underlying plasma cell disorder that lacks a standard treatment strategy because of its rarity. We report a case of relapsed POEMS syndrome successfully treated with a second ambulatory autologous hematopoietic-cell transplantation (AHCT) after a daratumumab desensitization protocol performed during the coronavirus disease (COVID-19) pandemic in a patient with coexisting human immunodeficiency virus (HIV), hepatitis B virus (HBV) and syphilis infections. He is a 37-year old Latin-American male who had been treated with radiation, CyBorD regimen, AHCT and bortezomib therapy before being referred to our service. It was decided to administer daratumumab therapy and subsequently perform the transplant. Placement of central venous access, fluid infusion, conditioning regimen with melphalan and previously cryopreserved autograft infusion were carried out in an outpatient basis. Following second AHCT, the patient demonstrated clinical, VEGF, hematological response and remains SARS-CoV-2 infection-free and in POEMS remission with excellent quality-of-life at last follow up (6 months). We evidenced that thanks to an outpatient transplant program, the best therapeutic modalities can be offered to patients with hematologic malignancies in the context of present or future pandemics. Finally, high-complexity patients with HIV infection should have access to the same treatment strategies as non-infected patients. A second AHCT in the outpatient setting is feasible, safe and highly effective to treat patients with relapsed POEMS syndrome., (Copyright © 2021 Elsevier B.V. All rights reserved.)

We report a 41-year-old woman with a history of an uncomplicated spinal hemangioma resection, who developed acute onset sensory-motor polyneuropathy following influenza vaccine administration. With extensive workup she was diagnosed with POEMS syndrome with progressive headaches, visual loss with papilledema, and repeated elevated lumbar puncture opening pressures despite treatment with acetazolamide and immunosuppressive therapy. Her symptoms dramatically improved following ventriculoperitoneal shunt placement. POEMS syndrome is a paraneoplastic disorder involving a constellation of clinical symptoms including polyneuropathy, organomegaly, endocrinopathy, monoclonal protein elevation, and skin changes. The progression of the disease involves a number of neurovascular sequelae, including symmetric sensory-motor polyneuropathy resembling chronic inflammatory demyelinating polyneuropathy, cerebrovascular accidents, and papilledema associated with increased intracranial pressure. Despite the association of POEMS with papilledema, treatment for this finding typically includes acetazolamide and therapeutic large volume lumbar punctures. To our knowledge, this is the first report of cerebrospinal fluid shunting for the symptomatic management of hydrocephalus associated with POEMS syndrome., (Copyright © 2015 Elsevier Ltd. All rights reserved.)

A rare, multisystem, plasma cell neoplasm, POEMS (polyradiculoneuropathy, organomegaly, endocrinopathy, M-spike, skin changes) syndrome is characterized by an abundance of proinflammatory and angiogenic cytokines. Patients with POEMS are known to have a high incidence of engraftment syndrome after autologous stem cell transplantation. We conducted a pilot study assessing levels of 30 different pro- and anti-inflammatory cytokines before and serially after transplantation in 18 patients with plasma cell neoplasms: POEMS syndrome (n = 9), multiple myeloma (n = 4), and amyloidosis (n = 5). We show that POEMS patients have higher pretransplantation levels of IL-4, IL-10, IL-13, IFN-α, and EGF as compared with those with non-POEMS plasma cell neoplasms. Higher pre- and posttransplantation IL-13 levels correlated with delayed neutrophil engraftment in POEMS patients. Low posttransplantation IL-1RA levels correlated with engraftment syndrome in both POEMS and non-POEMS patients. We conclude that differences in the peri-transplantation cytokine milieu may explain the higher transplantation morbidity in patients with POEMS syndrome. Our results need validation in a larger cohort., (Copyright © 2013 American Society for Blood and Marrow Transplantation. Published by Elsevier Inc. All rights reserved.)

Autologous PBSC transplantation is a preferred treatment for patients with polyneuropathy, organomegaly, endocrinopathy, M protein, and skin changes (POEMS syndrome). However, data on stem cell mobilization in POEMS syndrome are limited. We retrospectively reviewed outcomes and factors prognostic of mobilization in newly diagnosed patients with POEMS syndrome. A total of 56 patients (41 men and 15 women) were included and the median age was 45 years (range, 24-62). All patients underwent mobilization with CY plus granulocyte CSF (G-CSF) (n=38) or G-CSF alone (n=18). The median total number of harvested CD34+ cells was 2.01 × 10(6)/kg (range, 0.18-9.0 × 10(6)/kg). In all, 29 (51.8%) patients failed to yield more than 2 × 10(6)/kg CD34+ cells, and among them, 7 (12.5%) patients yielded <1 × 10(6)/kg CD34+ cells. The overall mobilization-related morbidity was 23.3% and acute renal failure was the most common complication during mobilization. Multivariate analysis showed that hepatomegaly (odds ratio 0.06, 95% confidence interval (CI) 0.01-0.43) and mobilization regimen of G-CSF alone (odds ratio 0.08, 95% CI 0.01-0.70) were independent prognostic factors for successful mobilization in POEMS syndrome. In conclusion, mobilization in newly diagnosed patients with POEMS syndrome is challenging with low yield of CD34+ cells and high morbidity. Induction therapy before mobilization might improve the efficacy and safety of mobilization.

The acronym POEMS syndrome stands for a rare multi-system disorder, comprised of polyneuropathy, organomegaly, endocrinopathy, M protein, and skin changes. Here, we present a single-center report of a series of five POEMS patients treated with melphalan high-dose therapy (HDT) with subsequent autologous blood stem cell transplantation (ABSCT). After a median follow-up of 52 months from time of diagnosis (range, 15-192) and a median follow-up of 18 months after ABSCT (range, 11-120), all patients were alive. Overall, no severe transplantation-associated complications such as engraftment syndrome or peri- or post-transplant death were noted. In two cases, HDT followed by ABSCT resulted in a complete hematologic response; in the additional three cases, partial responses (PR) were achieved including one very good hematologic PR. Only one patient with initial PR developed progressive disease nearly 2.5 years after transplantation. Consequently, a second HDT with ABSCT was successfully applied resulting in clinical improvement and hematologic PR. In line with previous single-center reports, melphalan HDT followed by ABSCT proved to be a first-line treatment option with tolerable side effects in severely affected POEMS patients with progressing symptoms.

High-dose chemotherapy with autologous stem cell transplantation (ASCT) can achieve excellent clinical responses in patients with POEMS syndrome (Jimenez Zepeda et al., Blood 2010;116:2403; Gertz et al., Am J Hematol 2005;79:319-328; Gherardi et al., Ann Neurol 1994;35:501-505; Gattinoni et al., Nat Rev Immunol 2006;6:383-393; Salem et al., J Immunol 2009;182:2030-2040; Salem et al., Cancer Immunol Immunother 2010;59:341-353; Salem et al., Cell Immunol 2010;261:134-143). However, High-dose melphalan with ASCT should be considered carefully due to its treatment-related morbidity (Vuckovic et al., Blood 2003;101:2314-2317), especially in patients with poor performance status owing to polyneuropathy and multiorgan involvement, such as cardiac, respiratory, and renal failure. Significant increases in the concentration of circulating macrophage colony-stimulating factor, erythropoietin, IL-6, and TNF-α, reach near maximal values at approximately day +12, predating neutrophil engraftment, and clinically manifest with fever, rash and edema (Dispenzieri et al., Eur J Haematol 2008;80:397-406). Depending on the definition used, approximately 50% of patients satisfied criteria for engraftment syndrome (ES) (Vuckovic et al., Blood 2003;101:2314-2317). ES occurs in 27-47% of patients who undergo ASCT; mortality rate is reported from 8% to 18% (Gattinoni et al., Nat Rev Immunol 2006;6:383-393; Vuckovic et al., Blood 2003;101:2314-2317). We have therefore reviewed our experience with ASCT in patients with POEMS syndrome who were treated with cyclophosphamide and prednisone as induction therapy followed by cyclophosphamide mobilization with an emphasis on treatment-related morbidity and frequency of ES. Our study confirms that ASCT is a feasible and efficacious treatment for patients with POEMS syndrome. In addition, the use of CP followed by cyclophosphamide mobilization decreases the incidence of PES leading to less morbidity and mortality rates., (2011 Wiley-Liss, Inc.)

POEMS (peripheral neuropathy, organomegaly, endocrinopathy, M protein, skin changes) syndrome is a rare multisystem paraneoplastic disorder. A 40-year-old male with a history of peripheral neuropathy and erectile dysfunction presented with a pathological fracture of the neck of the femur, found to be a solitary plasmacytoma. Additional unusual features included splenomegaly, hyperprolactinaemia and skin changes. The patient had a total hip replacement at a specialist orthopaedic hospital and is due to undergo radiotherapy to the femoral lesion and autologous stem cell transplantation.

Objectives: To investigate skin manifestations of the polyneuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and skin changes (POEMS) syndrome and their correlation with serum vascular endothelial growth factor (s-VEGF-A) levels and to describe the impact of autologous peripheral blood stem cell transplantation (aPBSCT) on these manifestations and the correlation with s-VEGF-A levels., Design: Case series from January 1993 through June 2007., Setting: Hospitalized care in Assistance Publique-Hôpitaux de Paris in Pitié-Salpêtrière and Tenon hospitals., Patients: Twenty-three patients with POEMS syndrome, 10 of whom were clinically followed up after aPBSCT., Main Outcome Measures: Description and distribution of clinical lesions at POEMS syndrome diagnosis, skin evaluation after aPBSCT, and s-VEGF-A levels measured at POEMS syndrome diagnosis and after aPBSCT., Results: In 21 patients with skin manifestations at POEMS syndrome diagnosis, the most common skin manifestations were hemangiomas (18 patients [86%]), hyperpigmentation (16 [76%]), skin thickening (12 [57%]), acrocyanosis (12 [57%]), hypertrichosis (11 [52%]), acquired facial lipoatrophy (11 [52%]), and white nails (8 [38%]). The median s-VEGF-A level was not different between patients with and without skin manifestations except in those with hypertrichosis (P = .04). After aPBSCT, no significant correlation was observed between s-VEGF-A level decreases and response of skin manifestations, again except for hypertrichosis (P = .007)., Conclusions: Acquired facial lipoatrophy and livedo should be added to the skin manifestations of POEMS syndrome. Despite a role of s-VEGF-A in various skin manifestations, the impact of s-VEGF-A level decreases on skin outcomes is weak after aPBSCT, mostly resulting in clinical stabilization.

The authors describe a case of a 52-year-old woman in whom tetraplegia developed with neurological respiratory failure due to POEMS syndrome associated with a solitary sacral plasmacytoma. Resection was finally performed after her condition proved resistant to radiation and chemotherapy. The patient showed a dramatic recovery and was ambulatory without tumor recurrence after 5 years and 6 months of follow-up. To the authors' knowledge, there are only 3 reported cases in the literature of bilateral phrenic nerve palsy leading to respiratory failure treated by chemotherapy. This is the first report describing neurological recovery after surgery for pentaplegia due to POEMS syndrome associated with solitary sacral plasmacytoma.

POEMS syndrome is a rare multisystem disorder characterized by polyneuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and skin changes. We report the first case of spontaneous recovery of adrenal insufficiency in a patient with POEMS syndrome treated with autologous hematopoietic cell transplantation. We conclude that in patients with POEMS syndrome, adrenal insufficiency should be regularly assessed for potential recovery.

POEMS (Polyneuropathy, Organomegaly, Endocrinopathy, M-protein, Skin changes) syndrome is a rare hematological disease associated with overproduction of pro-inflammatory cytokines. Under the current nomenclature and diagnostic criteria for POEMS syndrome, the presence of characteristic polyneuropathy is required for diagnosis. We report a 43-year-old Japanese woman with organomegaly, endocrinopathy, M-protein, skin lesions, as well as typical renal lesions and sclerotic bone lesions. Of note, neurological examinations and peripheral nerve conduction tests were normal in this patient. In view of the overwhelming number of otherwise characteristic signs and symptoms, we made a provisional diagnosis of 'atypical POEMS syndrome without polyneuropathy'. If further similar cases are reported in the future, reconsideration of the nomenclature and/or diagnostic criteria for POEMS syndrome may be required.

Polyneuropathy, organomegaly, endocrinopathy, M protein and skin changes (POEMS) syndrome is a devastating syndrome, characterized by peripheral neuropathy, organomegaly, endocrinopathy, monoclonal plasma cells, skin changes, papilledema, volume overload, sclerotic bone lesions, thrombocytosis and high vascular endothelial growth factor (VEGF). High-dose chemotherapy with autologous peripheral blood stem cell transplantation (ASCT) ultimately yields excellent clinical responses, but there can be considerable peritransplant morbidity. We have treated 30 POEMS patients with ASCT at Mayo Clinic, Rochester. During transplant period, patients had high rates of fever, diarrhea, weight gain and rash (93%, 77%, 53% and 43%, respectively). Only 13% remained outpatient, and median time to discharge from hospital was transplant day 17 (range 0-175). Splenomegaly was the baseline factor that best predicted for a complicated peritransplant course. Depending on the definition used, approximately 50% of patients satisfied criteria for engraftment syndrome. Earlier and more aggressive use of corticosteroids may be associated with less complicated post-transplant courses. Median overall survival has not been reached; the treatment-related mortality was 3%. In addition, important clinical improvements and reductions in plasma VEGF levels can occur in the absence of significant decrease in the monoclonal protein. Unraveling the mechanisms of the syndrome both in the context of ASCT and in general are challenges for the future.

POEMS (polyneuropathy, organomegaly, endocrinopathy, M protein, skin changes) syndrome is a rare disorder characterized by a clonal plasma cell proliferation with a monoclonal protein typically small and lambda restricted. Clinically, this syndrome is a multisystemic disease whose major clinical feature is a peripheral polyneuropathy. A specific treatment for this disease does not exist. We report 4 patients with POEMS syndrome treated with an autologous haematopoietic stem cell transplantation in our centre. All patients had an improvement in neurologic symptoms and other manifestations of the syndrome. The monoclonal component and bone lesions decreased or disappeared. In conclusion, autologous haematopoietic stem cell transplantation is an effective therapy in patients with POEMS syndrome.

POEMS syndrome is a rare paraneoplastic syndrome secondary to a plasma cell dyscrasia. Recognition of the complex of a combination of peripheral neuropathy, organomegaly, endocrinopathy, monoclonal plasmaproliferative disorder, skin changes, sclerotic bone lesions, Castleman's disease, thrombocytosis, papilledema, peripheral oedema, pleural effusions, ascites, fingernail clubbing and white nails, is the first step in effectively managing the disease. More than 95% of patients will have monoclonal lambda sclerotic plasmacytoma(s) or bone marrow infiltration. In patients with a dominant sclerotic plasmacytoma, first-line therapy should include radiation to the lesion. Retrospective analysis and personal experience would dictate that systemic therapy be considered for patients with diffuse sclerotic lesions or absence of any bone lesion, and for those who have not demonstrated stabilisation of their disease 3-6 months after completing radiation therapy. For those patients with diffuse disease, systemic therapy is indicated. Useful approaches include therapy with corticosteroids, low dose alkylator therapy and high dose chemotherapy with peripheral blood stem cell transplant. Until the pathogenesis is fully understood, these are the mainstays of treatment for patients with POEMS syndrome.

Purpose: To report the case of a 64-year-old woman with peripheral neuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and skin changes (POEMS) syndrome, Castleman disease, optic nerve drusen, and peripapillary choroidal neovascularization., Methods: Interventional case report. Clinical practice., Results: Laser photocoagulation resolved the peripapillary choroidal neovascularization., Conclusion: This is the first documented case of optic disk drusen and peripapillary choroidal neovascularization associated with POEMS.

A 31-year-old man with Crow-Fukase syndrome was scheduled for orthopedic surgery of the right lower limb. Preoperative examination revealed severe heart failure due to cardiomyopathy. Anesthesia was maintained with sevoflurane and nitrous oxide in oxygen, and supplemental fentanyl combined with continuous epidural block. During surgery, we evaluated cardiac function using transesophageal echocardiography. To maintain his cardiac function, intravenous dopamine and dobtamine were administered continuously, and the surgery was performed successfully. We must take care of cardiac function during anesthetic management of a patient with this syndrome.