Glossary

Post hemorrhagic ventricular dilation. Enlargement of the ventricles (ventriculomegaly) that results from bleeding within the brain. The blood and its degradation by products adversely effect the normal circulation of cerebrospinal fluid with the result being the enlargement without clinical signs of hydrocephalus.

Pediatric Intensive Care Unit

Placental Alkaline Phosphatase – An enzyme that can be used as a marker for a germinoma.

per million population

per million population

Primative neuroectodermal tumor. An aggressive tumor of the nervous system occurring primarily in young children but also older children and young adults. It is comprised of immature cells of the neuroectoderm (hence its name).

Primative neuroectodermal tumors. An aggressive tumor of the nervous system occurring primarily in young children but also older children and young adults. It is comprised of immature cells of the neuroectoderm (hence its name).

Post Ovulation Day – Refers to the number of days since release of a mature egg from the ovary into the oviduct.

Polymorphism: a genetic variation resulting in the occurrence of several different forms or types of individuals among the members of a single species. An example would be the different blood groups seen in humans.

The ration of the length of the line from the basion (anterior, midline rim of Foramen Magnum) to the posterior arch of C1 divided by the distance of the line from the anterior arch of C1 to the opisthion (posterior, midline rim of the Foramen Magnum).  An equal length in the two lines (quotient of one) is normal, whereas a ratio or quotient of first line divided by the second suggests a possible atlanta-occipital dislocation, ann odontoid fracture or a fracture of the ring of the atlas (C1).