3 doctors weighed in:

Is hemiplegia due to a porencyphic cyst a type of birth defect?

3 doctors weighed in
Dr. James Ferguson
Pediatrics
2 doctors agree

In brief: Cyst is the defect

The porencephalic cyst by itself is considered a birth defect.
The neurological consequence of the cyst, the hemiplegia is more a side effect than a birth defect. This is similar to the lower limb paralysis that would be expected with an open spine defect -spina bifida. In both cases, function of normal nerves is distorted or lost due to the defect.

In brief: Cyst is the defect

The porencephalic cyst by itself is considered a birth defect.
The neurological consequence of the cyst, the hemiplegia is more a side effect than a birth defect. This is similar to the lower limb paralysis that would be expected with an open spine defect -spina bifida. In both cases, function of normal nerves is distorted or lost due to the defect.
Dr. James Ferguson
Dr. James Ferguson
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