First test done on Gabriel
Results and findings.
Radiology Report 1
November 15, 1996
Exam: Brain Ultrasound
The exam shows both lateral ventricles and the third ventricle to be moderately to maarkedly enlarged. No obivious abnormal mass is seen. The fourth ventricle is not demonstrated and this would raise the question of obstructive hydocephalus due to aqueductal stenosis or obstruction. No hemorrhage is seen.
CONCLUSION:
Moderate to marked dilatation of the lateral ventricles and third ventricle with no definite demostration of the fourth ventricle. This would raise the question of aqueductal stenosis or obstruction.
Test number 2 done on Gabriel.
Results and findings.
Radiology Report
November 15, 1996
Exam:MRI of head
History:
5 month old with abnormal brain ultrasound which showed dilated ventricles. I am not sure by their clinical symptoms.
MRI OF BRAIN:
Axial, sagital and coronal images of the brain were obtained. Images were obtained with and without IV contrast. The exam, as mentioned fron the ultrasound, shows marked enlargement of the lateral ventricles and the third ventricle. There is some paraventricular edema or fluid in the adjacent white matter of the brain. The main finding is that there is a large mass in the posterior fossa. This is a midline structure in the area of the vermis posterior fourth ventricle. The fourth ventricle is collapsed by this mass. The mass is just over 4 X 4 X 4 cm in size. In general, the mass shows signal of soft tissue but this signal is increased toward the water spectrum. There are, however, only two very small cystic structures within the large solid mass. The cysts are less than 5mm in size. In general, the mass is primarily solid type signal or texture. The mass is somewhat heterogeneous throughout. With contrast, there are very small streaks and nodules of enhancement thet have more the appearance of vessel than of enhancing tumor itself. There are no black areas to suggest calcification. No areas of increased signal are seen on T1 that would suggest hemorrhage. The region of cervical spine in the cord are demonstrated with no abnormality noted in this region. The tumor begins just above the foramen magnum posterior to the brain stem and extends up to the quadrigeminal cistern.
CONCLUSION:
Large 4 X 4 X 4 CM mass in the midline of the cerebellum in region of vermis. There are a few very small cystic areas in this tumor but primarily this is a solid type tissue and texture. This is heterogeneous. Astrocytoma might be a possibility but this is not the typical cystic astrocytoma. More likely might be a primitive neuroectodermal tumor such as MEDDULOBLASTOMA or EPENDYMAL BLASTOMA, Ependymoma might be a possibility.
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