POLISHCHUK, Katherine
DOB 12/15/2000
Exam: MR BRAIN WITHOUT & WITH CONTRAST
Exam Date of Service: 6 SEP 2006 08:45
Reason for Exam: Follow up on brain tumor.
MRI BRAIN - WITH AND WITHOUT CONTRAST
IMPRESSION:
1.
Heterogeneous infiltrating lesion centered on theleft pons is
again identified. There is decreased enhancement in T2 abnormality at the
central portion of the lesion suggesting favorable response to treatment.
2.
There is interval development of a new subependymal nodule in the left
frontal lobe
suggesting progression of tumor. The right frontal lobe subependymal nodule
has also increased in size in the interval.
3. Stable appearance to the ventricular system.
INDICATION: Brain tumor.
TECHNIQUE:
Multiplanar MR imaging of the brain was performend with and without contrast
using the pediatric protocol 4 cc of Magnevist.
COMPARISON: Prior MRIs dated 7/10/06, 4/14/06 and 9/15/05
FINDINGS:
The infiltrating neoplasm involving the left pons is again identified. There
is expansion of the pons with mass effect on the 4th ventricle. There is
marked decrease in the enhancement on the current exam. There is
heterogeneous signal intensity within the left aspect of the pons
consistent with sequelae of hemorrhage and/or calcification. There is
increased T2 signal intensity within the left pons extending into the
right pons consistent with vasogenic edema and/or tumor.
A ventricular shunt from a right frontal approach is again identified.
The ventricular system is stable in size. Again identified is a subependymal
area of increased T2 signal intensity in the right frontal lobe. On the
current study, there is a new lesion identified in the subependymal
region of the left frontal lobe. Findings are worrisome for a
subependymal spread of tumor.
No significant extra-axial fluid is seen. There is crowding of the basilar
cisterns. The central flow voids are maintained. The paranasal sinuses
are well aerated.
Interpreted by GUPTA, AKSHAY, S MD, Radiology Assoc.