We report a case of a 78-year-old woman with neutrophilia without eosinophilia who was pathologically diagnosed with eosinophilic myocarditis by myocardial biopsy. The biopsy specimen showed infiltrating granulocytes with hypersegmentation, mimicking neutrophils; however, they were confirmed to be eosinophils by Giemsa staining.
MorimotoSKuboNHiramitsuSet al. Changes in the peripheral eosinophil count in patients with acute eosinophilic myocarditis. Heart Vessels. 2003;18:193-196.
2.
ChanYKTsaiMHHuangDCZhengZHHungKD.Leukocyte nucleus segmentation and nucleus lobe counting. BMC Bioinformatics. 2010;11:558.
3.
YamamotoAKojimaTAokiTSasaiMTaniuchiSKobayashiY.Eosinophil hypersegmentation is a possible marker to monitor the disease activity of atopic dermatitis. Allergol Int. 2001;50:325-330.
4.
HerzogCASnoverDCStaleyNA.Acute necrotising eosinophilic myocarditis. Br Heart J. 1984;52:343-348.
5.
ChiharaJNakajimaS.Induction of hypodense eosinophils and nuclear hypersegmentation of eosinophils by various chemotactic factors and lymphokines in vitro. Allergy Proc. 1989;10:27-32.