RESUMEN
Although it is known that red blood cell (RBC) parameters and platelet count depend on ethnicity and sex, their reference intervals in healthy Asian populations are limited. The aim of this study was to establish reference intervals for RBC parameters and platelet count for healthy adults in Japan. A total of 750 healthy adults (447 women and 303 men; median age 40 years (18-67 years) at seven Japanese centers who participated in regular medical checkups entered this study. Their RBC parameters and platelet count were measured using automated hematocytometers. The reference intervals of the RBC parameters and platelet count according to sex in healthy adults were determined. There was an age-specific decrease in RBC counts and an age-specific increase in mean corpuscular volume in men. This study emphasizes the need to consider sex and age in the clinical use of reference intervals of RBC parameters.
Asunto(s)
Biomarcadores , Índices de Eritrocitos , Recuento de Plaquetas , Adolescente , Adulto , Anciano , Femenino , Voluntarios Sanos , Humanos , Japón/epidemiología , Masculino , Persona de Mediana Edad , Vigilancia en Salud Pública , Adulto JovenRESUMEN
INTRODUCTION: While white blood cell (WBC) parameters have been suggested to depend on ethnicity and gender, reference intervals in healthy Asian populations are limited. The present study established reference intervals of WBC parameters for healthy adults in Japan. METHODS: A total of 750 healthy adults (447 women and 303 men; 18-67 years old, median 40 years old) at 7 Japanese centers who participated in regular medical checkups entered this study. The WBC parameters were measured using automated hematocytometers and blood film reviews by a manual microscopic examination. RESULTS: The reference intervals of the WBC parameters according to gender in healthy adults were determined. Age-specific decreases in WBC counts of both gender groups and in neutrophil counts of women were noted. Favorable correlations between the hematocytometer and microscopic methods were found in neutrophils, lymphocytes, and eosinophils but not in monocytes or basophils. CONCLUSION: This study suggests the need to consider gender and age in the clinical use of reference intervals of WBC parameters.
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Recuento de Leucocitos/métodos , Leucocitos/citología , Adolescente , Adulto , Factores de Edad , Anciano , Femenino , Humanos , Japón , Recuento de Leucocitos/normas , Masculino , Microscopía , Persona de Mediana Edad , Valores de Referencia , Factores Sexuales , Adulto JovenRESUMEN
Primary nonsecretory plasma cell leukemia (PCL) is an extremely rare type of multiple myeloma. Here, we report a case of nonsecretory PCL with no previous history of multiple myeloma. The case exhibited extremely low levels of serum immunoglobulin and light chain, no detectable serum M-protein or free light chain restriction, no urine BJP, and no cytoplasmic light chain expression in flow cytometry. In fluorescence in situ hybridization, tumor cells exhibited fusion genes for IgH/BCL1 and IgH/cMyc, disappearance of the p53 signal, and a split signal for IgK(2p11), but no split signal for IgL (22q11). Therefore, we diagnosed primary nonsecretory PCL with multiple chromosomal abnormalities.