Colloid Cysts of the Third Ventricle: Are MR Imaging Patterns Predictive of Difficulty with Percutaneous Treatment?
Carl El Khoury
,a,
Pierre Brugièresa,
Philippe Decqa,
Ruxandra Cosson-Stanescua,
Catherine Combesa,
Frédéric Ricolfia and
André Gastona
a From the Department of Neuroradiology (C.E.K., P.B., R.C.-S., C.C., F.R., A.G.) and Neurosurgery (P.D.), Hôpital Henri Mondor, 51 avenue du Maréchal de Lattre de Tassigny, 9400 Creteil, France.
View larger version (79K):
[in a new window]
|
FIG 1. Patient 7.
A, Coronal T2-weighted sequence shows a very low-signal colloid cyst of the third ventricle, with obstruction of Monro's foramen.
B, High signal intensity can be seen on the T1-weighted sequence. Aspiration during the endoscopic procedure was difficult. The cyst's contents were evacuated after opening the cyst's wall by using larger aspirating probes.
| |
View larger version (78K):
[in a new window]
|
FIG 2. Patient 8.
A, Axial T2-weighted sequence shows a high-signal colloid cyst of the third ventricle, obstructing Monro's foramina.
B, Axial T1-weighted sequence shows a low signal–intensity cyst.
C, Axial CT scan shows a hypodense cyst. Aspiration during endoscopic procedure was easy.
| |
