Fetal Vertebral Chondrostasis-Significance of Excessive Cartilage in Vertebral Bodies of Newborns.

IF 1.3 4区 医学 Q3 PATHOLOGY
Emily Gorman, Steven J Staffa, Harry Kozakewich, David Zurakowski
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Abstract

Introduction: We describe an abnormality in fetal and neonatal vertebral bodies whose most conspicuous characteristic is an increase in cartilaginous matrix within cancellous osseous trabeculae. We have termed this finding fetal chondrostasis (FC).

Methods: We initiated a retrospective review of autopsy reports in which this condition had been prospectively diagnosed during a 36-year period. The Chalkley point counting method was applied to histologic sections of vertebral bodies to assess the relative components of cartilage, bone, and bone marrow. The results were compared to those of three control groups whose causes of death were prematurity, birth trauma, and infection.

Results: We found that on average, the cartilaginous content in the FC group was considerably greater in both preterm and term infants when compared to controls. FC seemed to evolve from diminished activity in the cartilaginous growth zone resulting in formation of excessively broad cartilaginous columns. These subsequently suffered from delayed resorption following their incorporation within cancellous bony trabeculae.

Conclusion: Excess cartilage within cancellous bone of vertebral centra in newborns is merely one aspect of disturbed intrauterine osseous development but is seemingly more readily discernible than other features at this site. The most common clinical correlates for FC were multiple congenital anomalies, congenital heart disease, intrauterine growth retardation, prematurity, and certain maternal factors.

胎儿椎体软骨症--新生儿椎体软骨过多的意义。
导言:我们描述了胎儿和新生儿椎体的一种异常,其最显著的特征是松质骨小梁内软骨基质的增加。我们将这一发现称为胎儿软骨症(FC):我们对 36 年间前瞻性诊断出该病症的尸检报告进行了回顾性研究。对椎体组织切片采用查克利点计数法评估软骨、骨和骨髓的相对成分。研究结果与三个对照组的结果进行了比较,这三个对照组的死亡原因分别是早产、出生创伤和感染:我们发现,与对照组相比,FC 组早产儿和足月儿的软骨含量平均要高得多。FC似乎是由于软骨生长区的活动减弱导致形成过宽的软骨柱。这些软骨柱在进入松质骨骨小梁后会出现延迟吸收:结论:新生儿椎体中心松质骨内软骨过多只是宫内骨发育紊乱的一个方面,但似乎比该部位的其他特征更容易辨别。FC最常见的临床相关因素是多种先天性畸形、先天性心脏病、宫内发育迟缓、早产和某些母体因素。
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来源期刊
CiteScore
3.70
自引率
5.30%
发文量
59
审稿时长
6-12 weeks
期刊介绍: The Journal covers the spectrum of disorders of early development (including embryology, placentology, and teratology), gestational and perinatal diseases, and all diseases of childhood. Studies may be in any field of experimental, anatomic, or clinical pathology, including molecular pathology. Case reports are published only if they provide new insights into disease mechanisms or new information.
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