新生儿颅骨骨膜下血肿的CT诊断

CT Diagnosis of Neonatal Skull Subperiosteal Hematoma

目的探讨新生儿颅骨骨膜下血肿的CT特征。方法回顾性分析51例经手术病理或随访证实的新生儿颅骨骨膜下血肿的CT资料。结果 51例中,共存在55个孤立的血肿,发生在顶部48例,发生在枕部2例,发生在额部1例,早期(包膜无钙化)21例,中期(包膜钙化)28例,晚期后遗改变2例。结论新生儿颅骨骨膜下血肿早期CT表现呈镰状或弧形稍高密度影,紧贴颅外板,不跨越颅缝,一周后,血肿下方的颅骨内见多发性骨质吸收区,中期CT表现为紧贴颅外板的不跨越颅缝的弧线或壳状钙化影,包膜钙化可完整或不完整,病变区的颅骨呈"夹层饼干"样双层颅板表现,晚期后遗症为不跨越颅缝的增厚外凸的颅骨骨样结构。

Objective To explore the CT features of neonatal skull subperiosteal hematoma. Methods Retrospectively analysis the CT data of 51 cases with neonatal skull subperiosteal hematoma confirmed by pathology or follow-up. Results Of 51 cases, there were 55 isolated hematoma, 48cses in the parietal, 2 in occiput, 1 in the frontal part, early stage（envelope without calcification） 21 cases, intermediate stage（envelope calcification）28 cases, late stage 2 cases. Conclusion CT performance of early neonatal skull subperiosteal hematoma is sickle or arc slightly high density shadow, and keep abreast of the cranial outer plate, not across tile cranial seam, a week later, multiple bone absorption areas occur in the skull, CT performance of middle stage is arc or shell calcification shadow close to the plate and not across the Skull bone joint, envelope calcification can be complete or incomplete, the skull is ＂sandwich cookies＂ sample, late stage occurred thickening of the outer convex like skull bone structure.