Abstract
Spontaneous thrombosis of a vein of Galen aneurysmal malformation (VOGM) is rare. We describe a 2-month-old patient with a patent VOGM and hydrocephalus, also confirmed patent at 6 months, but with subsequent lack of filling on preembolization catheter digital subtraction angiography (DSA) at 9 months' age. Due to the presence of T1- and T2-bright signal, noncontrast T1-weighted images (T1WI), T2-weighted images (T2WI), two-dimensional (2D) time-of-flight (TOF) magnetic resonance venography (MRV), and postcontrast T1WI were ambiguous for patency. However, subtracting the pre- from the postcontrast MRV images confirmed closure compared to subtracted images at 6 months' age. The factors contributing to thrombosis were likely a combination of a disproportionately small straight sinus, ventriculostomy, and contrast medium from DSA.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 812-815 |
| Number of pages | 4 |
| Journal | Acta Radiologica |
| Volume | 50 |
| Issue number | 7 |
| DOIs | |
| State | Published - 2009 |
Keywords
- Aneurysm
- MR venography
- MRI
- Subtraction
- Vascular malformation
- Vein of Galen