Article Figures & Data
Figures
- Figure 1
A patient in 60s with incontinence urine and faeces for 5 months and aggravating for 1 month in bilateral lower limbs with numbness (mALs=5 points, mild disorder). (A) Abnormal vascular signal was tested in spinal canal by MRI-T2. (B) and (C) DSA and 3-D reconstruction images showed that SDAVF was fed by lateral sacral artery of internal iliac artery. (D) The DAVF system, including fistula, feeding artery and draining vein, was eliminated completely. (E) There was no abnormal blood flow signal after 6 months postoperation. 3-D, three-dimensional; DAVF, dural arteriovenous fistula; DSA, digital subtraction angiography; mALs, modified Aminoff–Logue scale; SDAVF, sacral dural arteriovenous fistula.
- Figure 2
An adult patient with both lower limbs weakness and dysuria for more than 50 days, aggravating for 4 days. (A) The feeding artery was not visualised at arterial stage of angiography. (B) SDAVF was shown at S1 level at capillary stage of angiography. (C) The draining vein was eliminated by microsurgery totally. SDAVF, sacral dural arteriovenous fistula.
- Figure 3
A patient in 20s with right lower limb numb for half a year. (A) and (B) SDAVF located at S1 level (red arrow). (C) and (D) The draining vein was cut under microsurgery (white arrow). SDAVF, sacral dural arteriovenous fistula.
- Figure 4
An adult with incontinence urine and faeces (mALs=6 points, moderate disorder) for 10 days. (A) SDAVF in S1 level (white arrow) was fed by the branches of lateral sacral artery. (B) The draining vein extends at conus medullaris level. (C) Microcatheter reached at fistula (white arrow) through the branch of lateral sacral artery. (D) and (E) SDAVF was embolised completely. mALs, modified Aminoff–Logue scale; SDAVF, sacral dural arteriovenous fistula.
Tables
- Table 1
Clinical data of 36 patients with SDAVF
Clinical information Date Age (years old) 50.9±10.1 Female (n, %） 21 (58.3%) Course of disease (month, M(Q)) 4 (10) Supplying artery Internal iliac artery 31 (86.1%) External iliac artery 2 (5.6%) Median sacral artery 3 (8.3%) Segment S1 24 (66.7%) S2 10 (27.8%) S3 2 (5.6%) Treatment method Endovascular embolisation 30 (77.8%) Microsurgery 6 Preoperative mALs (M(Q)) 4 (1) Postoperative mALs (M(Q))* 3 (1) Prognosis (n, %) Improve 21 (73.3%) No-change 15 (26.7%) Worsen 0 *According to mALs, postoperative function had improved significantly (Z=−3.449, p=0.001).
mALs, modified Aminoff–Logue scale; SDAVF, sacral dural arteriovenous fistula.
