Two Cases of Primary Cold Agglutinin Disease Associated with Megaloblastic Anemia

We report two cases of primary cold agglutinin disease (CAD) associated with megaloblastic anemia in Japanese elderly patients. Case 1 was a 67-year-old male and Case 2 was a 55-year-old male. Both patients were diagnosed with primary CAD, with continuously high cold agglutinin titers (1 : >8,192...

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Main Authors: Shinsaku Imashuku, Naoko Kudo, Katsushige Takagishi, Katsuyasu Saigo
Format: Article
Language:English
Published: Wiley 2015-01-01
Series:Case Reports in Hematology
Online Access:http://dx.doi.org/10.1155/2015/913795
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author Shinsaku Imashuku
Naoko Kudo
Katsushige Takagishi
Katsuyasu Saigo
author_facet Shinsaku Imashuku
Naoko Kudo
Katsushige Takagishi
Katsuyasu Saigo
author_sort Shinsaku Imashuku
collection DOAJ
description We report two cases of primary cold agglutinin disease (CAD) associated with megaloblastic anemia in Japanese elderly patients. Case 1 was a 67-year-old male and Case 2 was a 55-year-old male. Both patients were diagnosed with primary CAD, with continuously high cold agglutinin titers (1 : >8,192 and 1 : 16,834, resp.), monoclonal IgM-kappa light chains, and no underlying disease. In addition, both patients had megaloblastic anemia due to vitamin B12 deficiency. One patient received rituximab and both received vitamin 12 supplementation. To date, no cooccurrence of primary CAD and megaloblastic anemia has been emphasized. Thus, the association of these hematological diseases may be incidental; however, given that CAD is an autoimmune disease which may show antibodies against intrinsic factor and gastric parietal cells, this association was thought to be probably not a coincidence. Clinicians should be aware of the possible simultaneous presence of autoimmune hemolytic/megaloblastic anemia in patients with primary CAD.
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spelling doaj-art-a8b0eff2d8ce4e65b0244f35a50ab5d92025-02-03T05:46:44ZengWileyCase Reports in Hematology2090-65602090-65792015-01-01201510.1155/2015/913795913795Two Cases of Primary Cold Agglutinin Disease Associated with Megaloblastic AnemiaShinsaku Imashuku0Naoko Kudo1Katsushige Takagishi2Katsuyasu Saigo3Department of Laboratory Medicine, Uji-Tokushukai Medical Center, Uji 611-0042, JapanDivision of Hematology, Takasagoseibu Hospital, Takasago 676-0812, JapanDepartment of Internal Medicine, Uji-Tokushukai Medical Center, Uji 611-0042, JapanDivision of Hematology, Takasagoseibu Hospital, Takasago 676-0812, JapanWe report two cases of primary cold agglutinin disease (CAD) associated with megaloblastic anemia in Japanese elderly patients. Case 1 was a 67-year-old male and Case 2 was a 55-year-old male. Both patients were diagnosed with primary CAD, with continuously high cold agglutinin titers (1 : >8,192 and 1 : 16,834, resp.), monoclonal IgM-kappa light chains, and no underlying disease. In addition, both patients had megaloblastic anemia due to vitamin B12 deficiency. One patient received rituximab and both received vitamin 12 supplementation. To date, no cooccurrence of primary CAD and megaloblastic anemia has been emphasized. Thus, the association of these hematological diseases may be incidental; however, given that CAD is an autoimmune disease which may show antibodies against intrinsic factor and gastric parietal cells, this association was thought to be probably not a coincidence. Clinicians should be aware of the possible simultaneous presence of autoimmune hemolytic/megaloblastic anemia in patients with primary CAD.http://dx.doi.org/10.1155/2015/913795
spellingShingle Shinsaku Imashuku
Naoko Kudo
Katsushige Takagishi
Katsuyasu Saigo
Two Cases of Primary Cold Agglutinin Disease Associated with Megaloblastic Anemia
Case Reports in Hematology
title Two Cases of Primary Cold Agglutinin Disease Associated with Megaloblastic Anemia
title_full Two Cases of Primary Cold Agglutinin Disease Associated with Megaloblastic Anemia
title_fullStr Two Cases of Primary Cold Agglutinin Disease Associated with Megaloblastic Anemia
title_full_unstemmed Two Cases of Primary Cold Agglutinin Disease Associated with Megaloblastic Anemia
title_short Two Cases of Primary Cold Agglutinin Disease Associated with Megaloblastic Anemia
title_sort two cases of primary cold agglutinin disease associated with megaloblastic anemia
url http://dx.doi.org/10.1155/2015/913795
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