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{{Whipple's disease}}
{{Whipple's disease}}
{{CMG}}; {{AE}} {{SSH}}
{{CMG}};{{AE}}{{BHA}}


==Overview==
==Overview==
Whipple’s disease is a very rare disease. Therefore, some aspects of pathogenesis have remained unclear. [[Tropheryma whipplei]] is usually transmitted through oral route to human hosts. There is no known causative genetic factor for Whipple's disease. However, genetic and immunologic factors play important roles on clinical manifestation of T. whipplei infection.
*Patients with Whipple's disease have varied presentation.
*Most common symptoms of Classical Whipple's disease  include joint pain weight loss diarrhea and arthropathy. Various other organ systems can be involved in Whipple's disease including central nervous system, cardiac system, renal system, skeletal muscles and pulmonary system.  


==Pathophysiology==
==History and Symptoms==


===Pathogenesis===
== Common Symptoms ==


*Whipple's disease is a rare bacterial systemic infection caused by [[Tropheryma whipplei]].<ref name="pmid18291339">{{cite journal |vauthors=Schneider T, Moos V, Loddenkemper C, Marth T, Fenollar F, Raoult D |title=Whipple's disease: new aspects of pathogenesis and treatment |journal=Lancet Infect Dis |volume=8 |issue=3 |pages=179–90 |year=2008 |pmid=18291339 |doi=10.1016/S1473-3099(08)70042-2 |url=}}</ref>


*[[Tropheryma whipplei]] is a [[periodic acid-Schiff stain]] positive, gram-positive [[bacillus]] of [[Actinomycetes]] family.<ref name="SchwartzmanSchwartzman2013">{{cite journal|last1=Schwartzman|first1=Sergio|last2=Schwartzman|first2=Monica|title=Whipple's Disease|journal=Rheumatic Disease Clinics of North America|volume=39|issue=2|year=2013|pages=313–321|issn=0889857X|doi=10.1016/j.rdc.2013.03.005}}</ref>
* [[Gastrointestinal system]] : Patients with Classical Whipple's Disease often present with [[weight loss]] with [[diarrhea]]. [[Diarrhea]] is the most common complain in the patients with Whipple's disease and it is associated with [[steatorrhea]]. Other gastrointestinal symptoms may be often seen like abdominal pain, occult mucosal bleeding, [[ascites]], [[hepatospleenomegaly]] and occasionally [[hepatitis]]. <ref name="pmid17202456">{{cite journal| author=Fenollar F, Puéchal X, Raoult D| title=Whipple's disease. | journal=N Engl J Med | year= 2007 | volume= 356 | issue= 1 | pages= 55-66 | pmid=17202456 | doi=10.1056/NEJMra062477 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=17202456  }} </ref>
* [[Articular system]] : Joint involvement is another predominant complain in patients with Whipple's disease. It is second most commonly involved system after the gastrointestinal system.  Patients may present with intermittent migratory [[arthralgias]] and/or [[arthritis]] often affecting peripheral joints like knees elbows wrists etc.  Multiple joint involvement is common. Most attacks are acute, rarely chronic arthritis may be destructive. <ref name="pmid17202456">{{cite journal| author=Fenollar F, Puéchal X, Raoult D| title=Whipple's disease. | journal=N Engl J Med | year= 2007 | volume= 356 | issue= 1 | pages= 55-66 | pmid=17202456 | doi=10.1056/NEJMra062477 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=17202456  }} </ref>


* The bacterium lives in soil and wastewater. Farmers and everyone who has any contact with contaminated soil and water are at high risk of the infection. <ref name="KeitaDiatta2013">{{cite journal|last1=Keita|first1=Alpha Kabinet|last2=Diatta|first2=Georges|last3=Ratmanov|first3=Pavel|last4=Bassene|first4=Hubert|last5=Raoult|first5=Didier|last6=Roucher|first6=Clémentine|last7=Fenollar|first7=Florence|last8=Sokhna|first8=Cheikh|last9=Tall|first9=Adama|last10=Trape|first10=Jean-François|last11=Mediannikov|first11=Oleg|title=Looking for Tropheryma whipplei Source and Reservoir in Rural Senegal|journal=The American Journal of Tropical Medicine and Hygiene|volume=88|issue=2|year=2013|pages=339–343|issn=0002-9637|doi=10.4269/ajtmh.2012.12-0614}}</ref>
== Less Common Symptoms ==


*It is transmitted through oro-oral and feco-oral routes. The poor sanitation is associated with [[Tropheryma whipplei|T. whipplei]] infection. <ref name="KeitaBrouqui2013">{{cite journal|last1=Keita|first1=Alpha Kabinet|last2=Brouqui|first2=Philippe|last3=Badiaga|first3=Sékéné|last4=Benkouiten|first4=Samir|last5=Ratmanov|first5=Pavel|last6=Raoult|first6=Didier|last7=Fenollar|first7=Florence|title=Tropheryma whipplei prevalence strongly suggests human transmission in homeless shelters|journal=International Journal of Infectious Diseases|volume=17|issue=1|year=2013|pages=e67–e68|issn=12019712|doi=10.1016/j.ijid.2012.05.1033}}</ref>  
* [[Central nervous system]] : CNS involvement in Whipple's disease most often presents as asymptomatic involvement with detection of T. whipplei DNA in CSF. In patients with symptomatic disease there might be focal CNS involvement which determine the varied clinical symptoms like [[dementia]], [[cerebral ataxia]],[[hemiparesis]], personality changes, [[opthalmoplegia]], [[nystagmus]] etc. About fifty percent patients may have [[supranuclear opthalmoplegia]] at presentation and twenty five percent of the patients may present with [[myoclonus]]. On rare occasion patients may present with hypothalmic involvement seen as [[polydipsia]] , [[hyperphagia]] , change in [[libido]] and sleep wake cycle.The pathognomic abnormalities in Whipple's are eye movement abnormalities Oculomasticatory myorhythmia (OMM) and oculofacial-skeletal myorhythmia (OSFM). CNS involvement usually has poor prognosis. <ref name="pmid17202456">{{cite journal| author=Fenollar F, Puéchal X, Raoult D| title=Whipple's disease. | journal=N Engl J Med | year= 2007 | volume= 356 | issue= 1 | pages= 55-66 | pmid=17202456 | doi=10.1056/NEJMra062477 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=17202456  }} </ref> <ref name="pmid11432814">{{cite journal| author=Dutly F, Altwegg M| title=Whipple's disease and "Tropheryma whippelii". | journal=Clin Microbiol Rev | year= 2001 | volume= 14 | issue= 3 | pages= 561-83 | pmid=11432814 | doi=10.1128/CMR.14.3.561-583.2001 | pmc=88990 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11432814  }} </ref>


*It is believed that human being is the only host for this bacterium.<ref name="MarthMoos2016">{{cite journal|last1=Marth|first1=Thomas|last2=Moos|first2=Verena|last3=Müller|first3=Christian|last4=Biagi|first4=Federico|last5=Schneider|first5=Thomas|title=Tropheryma whipplei infection and Whipple's disease|journal=The Lancet Infectious Diseases|volume=16|issue=3|year=2016|pages=e13–e22|issn=14733099|doi=10.1016/S1473-3099(15)00537-X}}</ref>
* Ocular involvement in Whipple's disease is rare and can involve [[uveitis]], [[retinitis]] , [[vitritis]] , [[retrobulbar neuritis]], [[papilledema]] . Ocular involvement is often seen in patients with CNS disease. <ref name="pmid11432814">{{cite journal| author=Dutly F, Altwegg M| title=Whipple's disease and "Tropheryma whippelii". | journal=Clin Microbiol Rev | year= 2001 | volume= 14 | issue= 3 | pages= 561-83 | pmid=11432814 | doi=10.1128/CMR.14.3.561-583.2001 | pmc=88990 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11432814  }} </ref>
 
* Skeletal muscle involvement in Whipples disease is seen as [[myalgias]] and muscle cramps <ref name="pmid17202456">{{cite journal| author=Fenollar F, Puéchal X, Raoult D| title=Whipple's disease. | journal=N Engl J Med | year= 2007 | volume= 356 | issue= 1 | pages= 55-66 | pmid=17202456 | doi=10.1056/NEJMra062477 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=17202456  }} </ref>
*It invades [[Intestine|intestines]] primarily and then every other organ including the heart, CNS, joints, lymph nodes, skin, lungs and the eyes. Tissues are infected by [[macrophage]] infiltration contaminated by [[Tropheryma whipplei]]. [[Tropheryma whipplei|T. whipplei]] multiplies in [[Macrophage|macrophages]] and [[Monocyte|monocytes]]. <ref name="pmid8903578">{{cite journal |vauthors=Marth T, Strober W |title=Whipple's disease |journal=Semin. Gastrointest. Dis. |volume=7 |issue=1 |pages=41–8 |year=1996 |pmid=8903578 |doi= |url=}}</ref> Although there is a massive infiltration of the intestinal mucosa with the bacteria, the immunologic response is not adequate to limit the infection. Bacterium-infected macrophages express less CD11b which leads to inappropriate antigen presentation. These macrophages are unable to turn into mature phagosomes and lower the thioredoxin expression. The impairment in [[Th1]] cells differentiation leads to the inability of the immune system to kill the bacteria. <ref name="DolmansBoel2017">{{cite journal|last1=Dolmans|first1=Ruben A. V.|last2=Boel|first2=C. H. Edwin|last3=Lacle|first3=Miangela M.|last4=Kusters|first4=Johannes G.|title=Clinical Manifestations, Treatment, and Diagnosis of Tropheryma whipplei Infections|journal=Clinical Microbiology Reviews|volume=30|issue=2|year=2017|pages=529–555|issn=0893-8512|doi=10.1128/CMR.00033-16}}</ref>
* Some patients may present with cardiac involvement which has varied presentation ranging from [[pericarditis]], [[myocarditis]], [[[heart failure]] or [[sudden Cardiac death]] . [[Endocarditis]] due to Whipple's disease is associated with negative blood cultures. Endocarditis is often preceded by [[arthritis]] and [[arthralgias]] .<ref name="pmid17202456">{{cite journal| author=Fenollar F, Puéchal X, Raoult D| title=Whipple's disease. | journal=N Engl J Med | year= 2007 | volume= 356 | issue= 1 | pages= 55-66 | pmid=17202456 | doi=10.1056/NEJMra062477 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=17202456  }} </ref> <ref name="pmid11432814">{{cite journal| author=Dutly F, Altwegg M| title=Whipple's disease and "Tropheryma whippelii". | journal=Clin Microbiol Rev | year= 2001 | volume= 14 | issue= 3 | pages= 561-83 | pmid=11432814 | doi=10.1128/CMR.14.3.561-583.2001 | pmc=88990 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11432814  }} </ref>
 
* Pulmonary involvement in classic Whipple’s disease may manifest as pleuritic chest pain, non productive cough and [[dyspnea]] . Chest x-ray often shows [[pleural effusion]] , pulmonary infiltration, or granulomatous mediastinal adenopathy. Often abdominal lymph nodes may be involved. <ref name="pmid11432814">{{cite journal| author=Dutly F, Altwegg M| title=Whipple's disease and "Tropheryma whippelii". | journal=Clin Microbiol Rev | year= 2001 | volume= 14 | issue= 3 | pages= 561-83 | pmid=11432814 | doi=10.1128/CMR.14.3.561-583.2001 | pmc=88990 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11432814  }} </ref>
* [[Tropheryma whipplei]] infection causes four different clinical manifestations: acute infection, asymptomatic carrier state, the classic Whipple’s disease, and localized chronic infection.<ref name="Marth2009">{{cite journal|last1=Marth|first1=Thomas|title=New Insights into Whipple’s Disease – A Rare Intestinal Inflammatory Disorder|journal=Digestive Diseases|volume=27|issue=4|year=2009|pages=494–501|issn=1421-9875|doi=10.1159/000233288}}</ref> <ref name="StreetDonoghue1999">{{cite journal|last1=Street|first1=Sara|last2=Donoghue|first2=Helen D|last3=Neild|first3=GH|title=Tropheryma whippelii DNA in saliva of healthy people|journal=The Lancet|volume=354|issue=9185|year=1999|pages=1178–1179|issn=01406736|doi=10.1016/S0140-6736(99)03065-2}}</ref>
* Hematological finding in Whipple's disease is [[anemia]] which may be due to malabsorption or mucointestinal bleeding.<ref name="pmid11432814">{{cite journal| author=Dutly F, Altwegg M| title=Whipple's disease and "Tropheryma whippelii". | journal=Clin Microbiol Rev | year= 2001 | volume= 14 | issue= 3 | pages= 561-83 | pmid=11432814 | doi=10.1128/CMR.14.3.561-583.2001 | pmc=88990 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11432814  }} </ref>
 
* Classical cutaneous finding reported in Whipple's disease is  [[melanoderma]] . This is less frequently reported these days as Whipple's disease is increasingly recognized early. <ref name="pmid17202456">{{cite journal| author=Fenollar F, Puéchal X, Raoult D| title=Whipple's disease. | journal=N Engl J Med | year= 2007 | volume= 356 | issue= 1 | pages= 55-66 | pmid=17202456 | doi=10.1056/NEJMra062477 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=17202456  }} </ref>
{{Family tree/start}}
* Late in course renal involvement may be seen rarely. <ref name="pmid17202456">{{cite journal| author=Fenollar F, Puéchal X, Raoult D| title=Whipple's disease. | journal=N Engl J Med | year= 2007 | volume= 356 | issue= 1 | pages= 55-66 | pmid=17202456 | doi=10.1056/NEJMra062477 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=17202456  }} </ref>
{{Family tree | | | | | | | | | | | | A01 | | | | | | | | | | | | |A01= Contamination via oro-oral or feco-oral route}}
{{Family tree | | | | | | | | | | | | |!| | | | | | | | | | | | | |}}
{{Family tree | | | | | | | | | | | | B01 | | | | | | | | | | | | |B01= Acute infection}}
{{Family tree | | | | | | | | | | | | |!| | | | | | | | | | | | | |}}
{{Family tree | | | | | | | | | | | | C01 | | | | | | | | | | | | |C01= Antibodies production}}
{{Family tree | | | | | | | | | |,|-|-|^|-|-|-|.| | | | | | | | | |}}
{{Family tree | | | | | | | | | D01 | | | | | D02 |D01= Strong immune response| D02= Insufficient immune response}}
{{Family tree | | | | | | |,|-|-|^|-|-|.| | | |!| | | | | | | | | |}}
{{Family tree | | | | | | E01 | | | | E02 | | E03 | | | | | | | | | |E01= Complete eradication|E02= Chronic carrier|E03= Chronic infection}}
{{Family tree | | | | | | | | | | | | | |,|-|-|^|-|-|.| | | | | | |}}
{{Family tree | | | | | | | | | | | | | F01 | | | | F02 | | | | | | |F01= Classic Whipple's disease|F02= Localized infection}}
{{Family tree | | | | | | | | | | | | | |!| | | | | | | | | | | |}}
{{family tree | | | | | | | |,|-|-|-|v|-|^|-|v|-|-|-|.| | | | | | |}}
{{Family tree | | | | | | | G01 | | G02 | | G03 | | G04 | | | | | | |G01= Cure|G02= Relapse|G03= Re-infection|G04= Death}}
{{Family tree/end}}
 
===Immunologic response===
* It is believed that host immunologic response to the microorganism plays an important role on the clinical manifestation of the disease.<ref name="pmid8903578">{{cite journal |vauthors=Marth T, Strober W |title=Whipple's disease |journal=Semin. Gastrointest. Dis. |volume=7 |issue=1 |pages=41–8 |year=1996 |pmid=8903578 |doi= |url=}}</ref>
 
*
 
==Genetics==
There is no known causative genetic factor for Whipple's disease. However, there is an association between Whipple's disease and some immunologic defects.
*Studies showed that individuals with specific HLA type (HLA alleles DRB1*13 and DQB1*06) have a higher risk of Whipple's disease. <ref name="Marth2009">{{cite journal|last1=Marth|first1=Thomas|title=New Insights into Whipple’s Disease – A Rare Intestinal Inflammatory Disorder|journal=Digestive Diseases|volume=27|issue=4|year=2009|pages=494–501|issn=1421-9875|doi=10.1159/000233288}}</ref>
 
*
 
==Associated Conditions==
The most important conditions associated with Whipple's disease include:
* HLA-B27 individuals:
* Defective T-cell immunity:
 
==Gross Pathology==
*On gross pathology, [feature1], [feature2], and [feature3] are characteristic findings of [disease name].
 
==Microscopic Pathology==
*On microscopic histopathological analysis, [[PAS stain|PAS]]-positive [[Macrophage|macrophages]] in the [[lamina propria]] containing non-acid-fast gram-positive [[bacilli]] are characteristic findings of Whipple's disease.<ref name="SchneiderMoos2008">{{cite journal|last1=Schneider|first1=Thomas|last2=Moos|first2=Verena|last3=Loddenkemper|first3=Christoph|last4=Marth|first4=Thomas|last5=Fenollar|first5=Florence|last6=Raoult|first6=Didier|title=Whipple's disease: new aspects of pathogenesis and treatment|journal=The Lancet Infectious Diseases|volume=8|issue=3|year=2008|pages=179–190|issn=14733099|doi=10.1016/S1473-3099(08)70042-2}}</ref>
 
Below images show the characteristic feature of Whipple's disease. foamy [[Macrophage|macrophages]] are present in the [[lamina propria]].<ref>https://commons.wikimedia.org</ref>
 
<gallery align="left">
File:Whipple disease low mag.jpg| Low magnification micrograph of Whipple's disease. H&E stain. Duodenal biopsy. By Nephron (Own work)<ref> CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=15357443</ref>
 
File:Whipple disease - intermed mag.jpg| Intermediate magnification micrograph of Whipple's disease. H&E stain. Duodenal biopsy. By Nephron (Own work)<ref> CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=15357450</ref>
 
File:Whipple disease high mag.jpg| High magnification micrograph of Whipple's disease. H&E stain. Duodenal biopsy. By Nephron (Own work)<ref> CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=15357481</ref>
 
File:Whipple disease very high mag.jpg| Very high magnification micrograph of Whipple's disease. H&E stain. Duodenal biopsy. By Nephron (Own work)<ref> CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=15357462</ref>
</gallery>


==References==
==References==

Revision as of 02:52, 2 November 2017

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: Bhagyashree Deshmankar M.B.B.S.[2]

Overview

  • Patients with Whipple's disease have varied presentation.
  • Most common symptoms of Classical Whipple's disease include joint pain weight loss diarrhea and arthropathy. Various other organ systems can be involved in Whipple's disease including central nervous system, cardiac system, renal system, skeletal muscles and pulmonary system.

History and Symptoms

Common Symptoms

  • Gastrointestinal system : Patients with Classical Whipple's Disease often present with weight loss with diarrhea. Diarrhea is the most common complain in the patients with Whipple's disease and it is associated with steatorrhea. Other gastrointestinal symptoms may be often seen like abdominal pain, occult mucosal bleeding, ascites, hepatospleenomegaly and occasionally hepatitis. [1]
  • Articular system : Joint involvement is another predominant complain in patients with Whipple's disease. It is second most commonly involved system after the gastrointestinal system. Patients may present with intermittent migratory arthralgias and/or arthritis often affecting peripheral joints like knees elbows wrists etc. Multiple joint involvement is common. Most attacks are acute, rarely chronic arthritis may be destructive. [1]

Less Common Symptoms

  • Central nervous system : CNS involvement in Whipple's disease most often presents as asymptomatic involvement with detection of T. whipplei DNA in CSF. In patients with symptomatic disease there might be focal CNS involvement which determine the varied clinical symptoms like dementia, cerebral ataxia,hemiparesis, personality changes, opthalmoplegia, nystagmus etc. About fifty percent patients may have supranuclear opthalmoplegia at presentation and twenty five percent of the patients may present with myoclonus. On rare occasion patients may present with hypothalmic involvement seen as polydipsia , hyperphagia , change in libido and sleep wake cycle.The pathognomic abnormalities in Whipple's are eye movement abnormalities Oculomasticatory myorhythmia (OMM) and oculofacial-skeletal myorhythmia (OSFM). CNS involvement usually has poor prognosis. [1] [2]
  • Ocular involvement in Whipple's disease is rare and can involve uveitis, retinitis , vitritis , retrobulbar neuritis, papilledema . Ocular involvement is often seen in patients with CNS disease. [2]
  • Skeletal muscle involvement in Whipples disease is seen as myalgias and muscle cramps [1]
  • Some patients may present with cardiac involvement which has varied presentation ranging from pericarditis, myocarditis, [[[heart failure]] or sudden Cardiac death . Endocarditis due to Whipple's disease is associated with negative blood cultures. Endocarditis is often preceded by arthritis and arthralgias .[1] [2]
  • Pulmonary involvement in classic Whipple’s disease may manifest as pleuritic chest pain, non productive cough and dyspnea . Chest x-ray often shows pleural effusion , pulmonary infiltration, or granulomatous mediastinal adenopathy. Often abdominal lymph nodes may be involved. [2]
  • Hematological finding in Whipple's disease is anemia which may be due to malabsorption or mucointestinal bleeding.[2]
  • Classical cutaneous finding reported in Whipple's disease is melanoderma . This is less frequently reported these days as Whipple's disease is increasingly recognized early. [1]
  • Late in course renal involvement may be seen rarely. [1]

References

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Fenollar F, Puéchal X, Raoult D (2007). "Whipple's disease". N Engl J Med. 356 (1): 55–66. doi:10.1056/NEJMra062477. PMID 17202456.
  2. 2.0 2.1 2.2 2.3 2.4 Dutly F, Altwegg M (2001). "Whipple's disease and "Tropheryma whippelii"". Clin Microbiol Rev. 14 (3): 561–83. doi:10.1128/CMR.14.3.561-583.2001. PMC 88990. PMID 11432814.

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