每日一题_2024.12.19

A newborn boy was admitted to the neonatal intensive care unit for management of a congenital abnormality, which had first been identified on an antenatal ultrasound image at 20 weeks’ gestation. A physical examination was notable for the presence of a red, fluid-filled sac, measuring 7.7 cm by 7.1 cm by 5.3 cm, that protruded through a lumbosacral defect. Subsequent magnetic resonance imaging of the spine confirmed the finding. What is the most likely diagnosis?一个新生男婴因先天性异常被送入新生儿重症监护室进行治疗，这种异常最初是在20周妊娠时的产前超声图像上被识别出来的。体格检查发现有一个红色、充满液体的囊袋，尺寸为7.7厘米乘7.1厘米乘5.3厘米，它从腰骶部的缺陷处突出。随后对脊柱进行的磁共振成像确认了这一发现。最可能的诊断是什么？

A. Dandy-Walker syndrome丹迪-沃克综合症

B. Hemangioma血管瘤

C. Meningocele脑脊膜突出

D. Presacral neurenteric cyst骶前神经肠源性囊肿

E. Spina bifida occulta隐性脊柱裂

答案解析：

宝宝出生后六天，他接受了囊袋切除和缺陷重建手术；囊袋内没有发现神经元素。脑脊膜突出的诊断得到了确认。脑脊膜突出是一种开放性神经管缺陷，其中脑膜和脑脊液（而不是神经组织）通过脊柱的开口突出。

正确答案：C