| dc.description.abstract | The frontal sinus is one of the four
major sinuses in the skull. The
development process of these four
paired sinuses differ from one another.
The sphenoid and frontal sinuses are
both pneumatized after birth, and not
fully grown until late adolescence.
1 The
frontal sinuses are two sinuses located
within the frontal bone in the posterior
section of the supercilliary arches. They
are rarely symmetrical; the septum
between these two sinuses frequently
deviates from the midline. On rare
occasions, one or both sinuses may be
absent.
2 A large asymmetry between
both frontal sinuses can occur in the
same individual separately. The
pneumatization of the frontal sinus is
highly variable, ranging from aplasia to
hyperplasia. The predominance of
supercilliary arches does not influence
the presence, absence, or size of the
frontal sinus.
3 A typical series of CT
scans for the sinuses uses less x-ray
radiation than a standard complete set
of x-rays. However, a CT scan of the
sinuses does not show any brain tissue. | en_US |
