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The relationship between increased platelet count and megakaryocyte size in bronchial carcinoma
Author(s) -
Kristensen S. D.,
Bath P. M. W.,
Gladwin A.M.,
Martin J. F.
Publication year - 1992
Publication title -
british journal of haematology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.907
H-Index - 186
eISSN - 1365-2141
pISSN - 0007-1048
DOI - 10.1111/j.1365-2141.1992.tb08215.x
Subject(s) - megakaryocyte , platelet , mean platelet volume , medicine , gastroenterology , carcinoma , bone marrow , thrombopoiesis , pathology , haematopoiesis , biology , genetics , stem cell
Summary. This study investigates megakaryocyte size in bronchial carcinoma and its relationship to platelet count, mean platelet volume and platelet function, the latter determined in vivo by measurement of the cutaneous bleeding time. Measurements were performed in 19 patients with bronchial carcinoma and 11 patients with a hiatus hernia (controls). Platelet count (335.123 v. 241 × 72.10 9 /1) and megakaryocyte total area (772.135 v. 666.105μm 2 ) (mean × standard deviation) were both significantly increased in patients with bronchial carcinoma when compared to controls whilst the bleeding time was shorter in the patient group (253.116 v. 321.80 s). Patients with bronchial carcinoma were older (60.2 ×8.4 v. 48.8 ×13.2 years) and smoked more heavily (760.511 v. 92.175 cigarette years) than controls. Megakaryocyte size, platelet count and bleeding time all correlated with smoking habit ( r =0.395, P=0.031; r = 0.622, P<0.001; r =‐0.515, P =0.04 respectively). There were no statistically significant differences between the groups with respect to gender or mean platelet volume. When considering all patients, significant correlations existed between platelet count and megakaryocyte area ( r = 0.400, P = 0.029), and bleeding time and megakaryocyte area ( r =‐0.365, P = 0.047). The megakaryocyte nuclear and cytoplasmic areas were positively correlated ( r =0–855, P <0.001). This study suggests that the elevated platelet count in patients with bronchial carcinoma is mediated by an increase in the size of bone marrow megakaryocytes although the results are compounded by the association between smoking and megakaryocyte/platelet parameters.