A syndrome that is rare and involves multiple organ systems. PHACE is an acronym standing for pathological findings or involved organ systems: P = Posterior fossa brain abnormalities; H = Hemangiomas of the face or scalp (large); A = cervical or cerebral Artery abnormalities; C = Cardiac anomalies and Coarctation of the aorta; and E = Eye abnormalities. S can be included in the acronym (PHACES) in which case it stands for Sternal anomalies.
Glossary
WP Glossary
Phenotypic
A phenotype is an organism’s observable characteristics or traits. These can include the organism’s appearance, how it develops, how it behaves and how its organ systems work. The phenotype is the product of an organism’s genes’s (the so-called genotype), the organism’s environment and the interaction between the two.
PHH
Post hemorrhagic hydrocephalus. Hydrocephalus that results from bleeding within the brain as the blood and its degradation by products adversely effect the normal circulation of cerebrospinal fluid with the result being a progressive enlargement of the CSF spaces.
PHV
Peak Height Velocity – this is defined as the period of maximum growth rate during adolescents.
PHVD
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.
PICU
Pediatric Intensive Care Unit
PLAP
Placental Alkaline Phosphatase – An enzyme that can be used as a marker for a germinoma.
PMP
per million population
pmp
per million population
PNET
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).
