Lanning P, Koivisto M, Suramo I, Lanning M
Eur J Pediatr. 1977 Aug 23;126(1-2):103-8. doi: 10.1007/BF00443129.
Chest roentgenograms of 34 newborns with a hematocrit of 75 or more at the age of 12 hours were studied. An analysis was made of the findings during the first four days of life and the results were compared with those of 18 newborns with a hematocrit of 65 or less. The cardiothoracic ratio (CTR) was found to be greater in the polycythemic infants than in the non-polycythemic infants, and greatest of all in infants with symptomatic polycythemia. Prominent pulmonary vascularity and pulmonary hyperaeration were seen more often in polycythemic newborns than in non-polycythemic infants. Eleven infants in the polycythemic group and three in the non-polycythemic group had some symptoms or signs.
对34名出生12小时时血细胞比容达到或超过75的新生儿的胸部X线片进行了研究。对这些新生儿出生后前四天的检查结果进行了分析，并与18名血细胞比容为65或更低的新生儿的结果进行了比较。发现红细胞增多症婴儿的心胸比（CTR）高于非红细胞增多症婴儿，有症状性红细胞增多症的婴儿的心胸比最高。红细胞增多症新生儿比非红细胞增多症婴儿更常出现明显的肺血管增多和肺过度充气。红细胞增多症组有11名婴儿，非红细胞增多症组有3名婴儿出现了一些症状或体征。
