A rare non-hemolytic case of idiopathic cold agglutinin disease
Yükleniyor...
Dosyalar
Tarih
2018
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Clin Lab Publ
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Background: Cold agglutinin disease is a very rare condition associated with agglutination of erythrocytes in cold environment usually due to IgM type antibodies. Other than hemolytic anemias, it may interfere with routine hemogram tests due to miscalculation of red blood cell count (RBC) and other hemogram parameters calculated with involvement of RBC. Awareness of the condition is important to overcome laboratory errors. Methods: We studied a peripheral blood smear and repeated the hemogram test at 37 degrees C to establish the diagnosis of cold agglutinin disease. Results: Initial hemogram test results of the fifty-eight year-old man was as follows: RBC: 1.34 M/jiL, hemoglobin (Hb): 12.4 g/dL, hematocrit (Htc): 11.8%, mean corpuscular hemoglobin (MCH): 92.4 pg, and mean corpuscular hemoglobin concentration (MCHC): 105 gr/dL. Despite the standard indirect Coombs test being negative, repeated tests at room temperature was 4+. We suspected cold agglutinin disease and repeated the hemogram test using the Bain-Marie method at 37 degrees C and the test results showed RBC: 3.4 M/mu L, hemoglobin: 12.6 g/dL, hematocrit: 30.2%, MCH: 31.7 pg, and MCHC: 41.8 g/dL. Conclusions: Inappropriate hemogram results may be a sign of underlying cold agglutinin disease. Hemolytic anemia not always accompanies the disease; however, cold exposure may trigger erythrocyte agglutination in vitro and may cause erratic laboratory results.
Açıklama
Anahtar Kelimeler
Cold Agglutinin Disease, Red Blood Cell, Hemogram, Indirect Coombs
Kaynak
Clinical Laboratory
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
64
Sayı
6
