PubMed · 13543926
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P ASTRUP. 1958-02-06. Hemoglobin.. https://pubmed.ncbi.nlm.nih.gov/13543926/
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A 45-year-old man was referred to our hospital because of polycythemia. A physical examination revealed a large tumor in his scrotum enlarged to the size of 13 x 10 cm. A laboratory examination revealed severe erythrocytosis with a red blood cell count of 6,820 x 10(9)/L, a hemoglobin concentration of 21.2 g/dL, and a hematocrit of 59.8%. The total red cell volume was increased. A right radical orchidectomy was done with minimum bleeding, and he was diagnosed as having pure seminoma. After the operation, polycythemia improved spontaneously. Polycythemia is a rare complication of seminoma and only two cases have been reported previously. The precise mechanism of polycythemia in our patient could not be clearly evaluated, but clinical course did indicate a close relationship between two distinct disorders.
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The commercial control material for hematology Cell Dyn 16 Tri Level gave a good precision an accuracy using the four blood cell counters currently mostly used in Indonesia, the Coulter, Sysmex, Serono and Cell Dyn. It could be used as one of the hematology control material in an external quality control scheme. Result of the CV from participating laboratories are higher compared to this trial are caused by different level of laboratory technical ability although the geographical area and climate may also play a role. The new scoring calculation to evaluate the participant's performance gave a more wider range of DI scores, to give better insight to the performance of each laboratory.