fxs of the skull that appear jagged or irregular lucent lines that lie at right angles to the axis of the bone
Depressed fx
aka
ping pong fx
a fragment of bone that is separated and depressed into the cranial cavity
Basal skull fx
what modality of choice is used to view this fx
fx through the dense inner structures of the temporal bone
CT
why are gunshot wounds to the skull easily visualized
because of the lead in the bullet
what are neplasms
new and abnormal growths
what are lesions with proliferative bony growths of increased density (brightness)
osteoblastic lesion
what are metastases
are primary malignant neoplasms that spread to distant sites via blood and the lymphatic system.
what are destructuve lesions with irregular margins
osteolytic metastases
combination osteolytic and osteblastic
lesions that have a moth eaten appearance of bone because of the mix destructive and blastic lesions
what are pituitary adenomas
tumors of the pituitary gland
Pagets disease is aka
osteitis deformans
pagets disease:
what is the radiographic appearance
disease of unknown origin that begins as a stage of bony destruction
cotton wool appearance w/irregular areas of increased density (sclerosis)
Mastoiditis
what causes progressive hearing loss
is a bacterial infection of the mastoid process that can destroy the inner part of the mastoid process
mastoid air cells are replaced with a fluid filled abscess
Acoustic neuroma
It is diagnosed with which two modalities
refers to a benign tumor of the auditory nerve sheath that originates in the internal auditory canal
CT or MRI
Cholesteatoma
This can result in
a benign cystlike mass tumor that is most common in the middle ear or mastoid region secondary to trauma
It destroys bone which can lead to serious complications including hearing loss
polyp
polyps can cause what disease
a growth that arises from a mucous membrane and projects into a cavity (sinus)
chronic sinusitis
Osteosclerosis
Is this the most common cause of hearing loss w/o eardrum damage
a hereditary disease that involves excessive spongy bone formation of the middle and inner ear
yes
MRI
Sonography
provides images of the brain in an axial sagittal and coronal planes
mostly used on the neonate for the brain which is an integral part of treatment in the ICU it allows for rapid evaluation and screening for premature infants for intracranial hemorrhaging