骶骨发育不全的CT和MRI诊断

Imaging Diagnosis of Sacral Agenesis

目的探讨小儿骶骨发育不全的CT和MRI表现,以及CT和MRI对本病的诊断价值。方法回顾性分析19例骶骨发育不全的CT和MRI表现。男8例,女11例。全部患儿行MRI检查,6例同时行螺旋CT检查。结果19例患儿根据残存骶骨的形态分为3型,Ⅰ型9例,Ⅱ型9例,Ⅲ型1例。有10例合并上段脊柱的畸形;18例合并脊髓畸形,其中12例伴随脊髓栓系。另有6例合并肾脏畸形,2例合并神经源性膀胱。结论螺旋CT、MRI联合应用能全面、准确地显示骶骨发育不全患儿骶骨、脊髓、神经根及合并的其他畸形,具有很高的应用价值。

Objective： To explore the imaging features of sacral agenesis in children and the role of CT and MRI in diagnosing this disease. Methods： 19 cases of sacral agenesis were retrospectively analyzed,8 male cases and 11 female cases. All cases were examined with MRI,and 15 cases of which underwent spiral CT scanning simultaneously. Results： According to the appearance of the residual sacrum,all patients were classified into 3 types,9 cases belonging to type Ⅰ ,9 type 11 and 1 case type Ⅲ. Meanwhile, upper spinal malformations were shown in 10 cases. Spinal cord deformities were found in 18 patients,and 12 of which showed the signs of tethered cord syndrome. In addition, renal malformations were found in 6 cases, neurogenic bladder in 2 cases. Conclusion： Spiral CT combined with MRI can exactly manifest the appearance of the sacrum, spinal cord, nerve roots and other deformities of the affected children,hence being more helpful in diagnosing sacral agenesis.