PMC8295608_01
Lumbar x-rays: anteroposterior (A) and lateral views (B), MRI sagittal view, respectively, T1 (C), and T2 (D) sequences. The presence of the catheter was hard to identify even for experienced radiologists, as its intensity on T1-weighted and T2-weighted images was similar to that of the cauda equina nerve roots. (E) Lumbar CT scanner sagittal view showing the initially placed fourth ventricle to cervical subarachnoid space shunt located at L2-S1 level measuring around 15 cm in length and 2.5 mm in diameter. (F,G) Three-dimensional (3D) reconstructions. There is no local compression of neurological elements.
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F1
In the course of the assessment of recent abdominal pain, the patient benefited from an abdominal CT (Figure 1).
(A) Lateral x-ray showing the ventriculoperitoneal shunt. (B) No hydrocephaly and dilatation of fourth ventricles on MRI sagittal view T1 sequence. The syrinx has completely regressed (C) on MRI sagittal view T2 sequence.
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F2
The ventriculoperitoneal shunt seemed to be functional, and no fourth ventricle entrapment was found (Figure 2).