Capillary telangiectasia

Clinical History: 
27 yr old woman presented with sudden onset of hearing loss in the right ear, severe headache, dizziness, double vision six years ago. MRI of the brain at that time revealed an incidental finding of capillary telangiectasia in the right pons. During recent visit to the hospital follow up MRI was performed.

Diagnosis:
Capillary telangiectasia

MR Technique: 
3 T MRI (Seimens Verio) with head coil. Image 1: Axial gradient echo (TR/TE: 693/19.9 ms, slice thickness 4 mm, scan time 2 min 21 sec ); Image 2: Sagittal T1 weighted (TR/TE 440/2.5 ms, slice thickness 4 mm, scan time 2 min 26 sec); Image 3: Axial T2 weighted (TR/TE 6000/96 ms, slice thickness 4 mm, scan time 1 min 12 sec); Image 4: Sagittal T1 weighted after injection of 0.1 mmol/kg of gadolinium chelate (TR/TE 440/2.5 ms, slice thickness 4 mm, scan time 2 min 26 sec

Imaging Findings:
A small, well defined lesion is present in the right aspect of the pons. This lesion shows blooming artifact on the GRE sequences and appears slightly hyperintense on T1 weighted images. It demonstrates mild enhancement on the postcontrast images. No evidence of abnormal T2 signal is present.