M A Smit, C M J van Kinschot, J van der Linden, C van Noord, S Kos
{"title":"Measurement of anti-TSH receptor antibodies: what is the correct cut-off value?","authors":"M A Smit, C M J van Kinschot, J van der Linden, C van Noord, S Kos","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Background: </strong>Autoantibodies against the thyroid stimulating hormone receptor, thyrotropin receptor autoantibodies (TRAb) are diagnostic for Graves' disease and can be measured by different methods. As antibody concentrations are not comparable between methods, appropriate cut-off values need to be established for every single method. For a third-generation TRAb assay (Phadia, Thermofisher), the manufacturer determined the cut-off value in a study population consisting of Graves' disease (both newly diagnosed and patients under treatment) and non-Graves' disease patients. The aim of this study was to verify whether this cut-off value holds true in our population.</p><p><strong>Methods: </strong>Retrospective analysis was performed on TRAb measurements collected over a period of six months from all patients referred for TRAb testing. For our study, we included patients that were newly diagnosed with hyperthyroidism including Graves' disease, multinodular goitre, toxic adenoma, and thyroiditis. Furthermore, we included Graves' patients that were under treatment at the time of TRAb measurement.</p><p><strong>Results: </strong>Whereas all patients with Graves' disease had positive TRAb, few patients with multinodular goitre, toxic adenoma, and thyroiditis scored positive for TRAb. ROC curve analysis revealed a cut-off value of 4.5 IU/l (compared to 3.3 IU/l established by the manufacturer). Newly diagnosed Graves' patients had higher TRAb concentrations compared to patients under treatment.</p><p><strong>Conclusion: </strong>The cut-off value of this immunoassay should probably be set higher in untreated Graves' patients than proposed by the manufacturer as the cut-off value should be determined in a study population excluding Graves' patients under treatment. The overall clinical picture remains crucial in the diagnosis of Graves' disease.</p>","PeriodicalId":18918,"journal":{"name":"Netherlands Journal of Medicine","volume":"78 2","pages":"55-63"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37869957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The book of Genesis and physician-patient communication.","authors":"A Schattner","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":18918,"journal":{"name":"Netherlands Journal of Medicine","volume":"78 2","pages":"94"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38132607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M M J Burgers, J A A Meijer, E J H M van de Weijgert, E de Jongh
{"title":"A rare case of Waldenström's macroglobulinaemia-associated cryoglobulinaemia vasculitis.","authors":"M M J Burgers, J A A Meijer, E J H M van de Weijgert, E de Jongh","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>This case report presents a patient with vasculitis as a presenting symptom of type I cryoglobulinaemia due to lymphoproliferative disease. This is an uncommon cause of vasculitis, but important to recognise, as it influences treatment decisions. We discuss the differential diagnosis and extensive diagnostic approach of vasculitis. Above all, this case emphasizes that even a limited quantity of paraproteins can cause severe symptoms.</p>","PeriodicalId":18918,"journal":{"name":"Netherlands Journal of Medicine","volume":"78 2","pages":"83-86"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37869956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Multiple curvilinear lesions on a patient's back.","authors":"A Sil, G S Mukherjee, D B Bhanja, A Panigrahi","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":18918,"journal":{"name":"Netherlands Journal of Medicine","volume":"78 2","pages":"92"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37869897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Zapping away hyperthyroidism.","authors":"T I M Korevaar","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":18918,"journal":{"name":"Netherlands Journal of Medicine","volume":"78 2","pages":"48-49"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37869955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Raccoon sign.","authors":"M van der Huizen, E Jacobs","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":18918,"journal":{"name":"Netherlands Journal of Medicine","volume":"78 2","pages":"90"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37869893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Decreased bone mineral density and reproductive axis dysfunction: more than oestrogen.","authors":"E P DeLoughery, M L Dow","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Decreased bone mineral density (BMD) in oestrogendeficient states has long been thought to be a direct outcome of the reduction in oestrogen. In physiologic and many pathologic hypo-oestrogenic states, oestrogen supplementation improves BMD. However, the relationship between oestrogen replacement and BMD is less clear in the case of reproductive axis dysfunction secondary to decreased caloric intake or increased energy expenditure, such as in female athletes or anorexia nervosa. This decrease in oestrogen is associated with decreased BMD, but oestrogen replacement in these states fails to conclusively improve BMD. This suggests that the decrease in BMD in these states is not driven solely by low oestrogen. Cortisol and other markers of inflammation may play a role in BMD reduction but further research is needed. What is clear is that increased caloric consumption and restoration of menses and the reproductive axis are essential to improving BMD, while pharmacologic therapy, including oestrogen replacement through hormone therapy or contraceptives, does not provide conclusive benefit.</p>","PeriodicalId":18918,"journal":{"name":"Netherlands Journal of Medicine","volume":"78 2","pages":"50-54"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37869891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E P A T Gommans, A L H J Aarnoudse, R J A van Wensen, A A W van Erp-van Boekel, R J E Grouls, C M J van der Linden
{"title":"Acute kidney failure after intra-articular use of gentamicin sponge.","authors":"E P A T Gommans, A L H J Aarnoudse, R J A van Wensen, A A W van Erp-van Boekel, R J E Grouls, C M J van der Linden","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>An 83-year-old man developed acute kidney failure after intra-articular use of gentamicin sponges for a periprosthetic hip infection. Haemodialysis was necessary for clearance of gentamicin, and for kidney function replacement. It is important to be aware that there is a risk of renal toxicity due to gentamicin when using a locally applied sponge.</p>","PeriodicalId":18918,"journal":{"name":"Netherlands Journal of Medicine","volume":"78 2","pages":"87-89"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38132606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Answer to Photo Quiz Multiple curvilinear lesions on a patient's back.","authors":"A Sil, G S Mukherjee, D B Bhanja, A Panigrahi","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":18918,"journal":{"name":"Netherlands Journal of Medicine","volume":"78 2","pages":"93"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37869898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E Dirikgil, S W Tas, A Rutgers, P M J Verhoeven, J M van Laar, E C Hagen, J Tekstra, A E L Hak, P van Paassen, M R Kok, R Goldschmeding, B van Dam, C E Douma, H H F Remmelts, J F Sanders, J T Jonker, T J Rabelink, J G M C Damoiseaux, H J Bernelot Moens, W J W Bos, Y K O Teng
{"title":"A Dutch consensus statement on the diagnosis and treatment of ANCA-associated vasculitis.","authors":"E Dirikgil, S W Tas, A Rutgers, P M J Verhoeven, J M van Laar, E C Hagen, J Tekstra, A E L Hak, P van Paassen, M R Kok, R Goldschmeding, B van Dam, C E Douma, H H F Remmelts, J F Sanders, J T Jonker, T J Rabelink, J G M C Damoiseaux, H J Bernelot Moens, W J W Bos, Y K O Teng","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Introduction: </strong>Despite the availability of several guidelines on the diagnosis and treatment of antineutrophil cytoplasmic antibody-associated vasculitis (AAV), clinical routine practice will only improve when an implementation strategy is in place to support clinical decision making and adequate implementation of guidelines. We describe here an initiative to establish national and multidisciplinary consensus on broad aspects of the diagnosis and treatment of AAV relevant to daily clinical practice in the Netherlands.</p><p><strong>Methods: </strong>A multidisciplinary working group of physicians in the Netherlands with expertise on AAV addressed the broad spectrum of diagnosis, terminology, and immunosuppressive and non-immunosuppressive treatment, including an algorithm for AAV patients. Based on recommendations from (inter)national guidelines, national consensus was established using a Delphi-based method during a conference in conjunction with a nationally distributed online consensus survey. Cut-off for consensus was 70% (dis)agreement.</p><p><strong>Results: </strong>Ninety-eight professionals were involved in the Delphi procedure to assess consensus on 50 statements regarding diagnosis, treatment, and organisation of care for AAV patients. Consensus was achieved for 37/50 statements (74%) in different domains of diagnosis and treatment of AAV including consensus on the treatment algorithm for AAV.</p><p><strong>Conclusion: </strong>We present a national, multidisciplinary consensus on a diagnostic strategy and treatment algorithm for AAV patients as part of the implementation of (inter)national guideline-derived recommendations in the Netherlands. Future studies will focus on evaluating local implementation of treatment protocols for AAV, and assessments of current and future clinical practice variation in the care for AAV patients in the Netherlands.</p>","PeriodicalId":18918,"journal":{"name":"Netherlands Journal of Medicine","volume":"78 2","pages":"71-82"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37869890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}