title: Evaluation of Peripheral Blood Smear for Myelodysplasia in Breast Cancer Patients who Received Adjuvant Antracycline.
abstract: OBJECTIVE
  Therapy-related myeloid neoplasms (t-MN) account for approximately 10% to 20% of all cases of AML (acute myeloid leukemia), MDS (myelodysplastic syndrome) and MDS/MPN (myelodysplastic syndrome/myeloproliferative neoplasms), MDS, and MDS/MPN. In our study, we evaluated peripheral blood smear samples and hemogram values in breast cancer patients who were receiving adjuvant anthracycline regimens and were in remission.
  
  
  METHODS
  A total of 78 patients receiving anthracycline-based adjuvant chemotherapy treatment from Kayseri Research and Training Hospital and Mersin State Hospital were enrolled in the study. Their adjuvant treatments had been completed at least 18 months prior to the study.
  
  
  RESULTS
  Two patients complained of anemia (2.2%) (Hb<11 mg/dl), leukopenia was observed in seven patients (7.7%) (leukocytes<4000/ mm(3)), and thrombocytopenia was observed in four patients (4.4%) (PLT<150.000/mm(3)). In the blood smear samples, the following were observed: ovalomacrocytes (14%), macrocytes (37%), acanthocytes (1%), stomatocytes (12%), teardrops (12%), nucleated erythrocytes (1%), basophilic stippling (14%), and Howell-Jolly bodies (1%). Additionally, hypo-granulation (38%), Pelger-Huet abnormalities (26%), hypersegmentation (20%), immature granulocytes (8%), and blasts (6%) were observed. We also confirmed the presence of giant platelets (50%) and platelet hypogranulation (19%).
  
  
  CONCLUSIONS
  According to the peripheral blood smear assessments in our study, we suggest that breast cancer patients should be evaluated for MDS in the early stages, starting from month 18, even if the automated blood counts are normal.
authors.affiliation: Department of Medical Oncology, Kayseri Education and Research Hospital, Kayseri, Turkey.
authors.forename: Hasan
authors.initials: H
authors.lastname: Mutlu
authors.affiliation: Department of Radiation Oncology, Mersin Govermant Hospital, Mersin, Turkey.
authors.forename: Zeki
authors.initials: Z
authors.lastname: Akca
authors.affiliation: Department of Hematology, Kayseri Education and Research Hospital, Kayseri, Turkey.
authors.forename: Havva Uskudar
authors.initials: HU
authors.lastname: Teke
authors.affiliation: Department of Internal Medicine, Kayseri Education and Research Hospital, Kayseri, Turkey.
authors.forename: Hediye
authors.initials: H
authors.lastname: Ugur
keywords: Anthracycline; Breast cancer; Chemotherapy side effect; Leukemia; Myelodysplasia