temporal petrositis
Introduction
Introduction to the sacral rock inflammation The sacral rock inflammation is a very rare disease. During the development of the tibia, the best part of gasification is the mastoid, while the rock bone gasification is poor. Only 30% of the rock bones are well developed, the gas chamber can reach the rock tip, and the chronic otitis media When inflammation can only affect the tip of the rock through small chamber infection, the incidence of rock tip inflammation is very low in clinical practice. The small bone houses are divided into two groups. The posterior upper group surrounds the sinus sinus, the tympanic cavity and the semicircular canal. The posterior lower group surrounds the following tympanic, eustachian tube and cochlea. If the treatment of acute middle ear mastoiditis is improper, it develops into concealed mastoiditis, which can gradually fuse the necrosis of the rock bone chamber and invade the rock tip to form an abscess. It can also be caused by bone destruction of chronic otitis media with cholesteatoma, and some patients develop symptoms after 1 to 2 weeks after simple mastoidectomy. basic knowledge The proportion of illness: 0.001% Susceptible people: no specific population Mode of infection: non-infectious Complications: acute suppurative mastoiditis mastoiditis
Cause
Cause of sacral rock inflammation
Osteonecrosis (30%):
If the treatment of acute middle ear mastoiditis is improper, it develops into concealed mastoiditis, which can gradually fuse the necrosis of the rock bone chamber and invade the rock tip to form an abscess, which causes the disease to occur.
Bone destruction (30%):
The tibia and fissure inflammation can also be caused by bone destruction of chronic otitis media with cholesteatoma, and the disease develops slowly. Some patients develop symptoms after 1 to 2 weeks after simple mastoidectomy.
Prevention
Tibial rock inflammation prevention
Be careful not to damage the internal carotid artery, vein, superior sinus and facial nerve. Those with ear neurosurgery can use the middle cranial fossa approach to separate the dura mater from the skull base, expose the top of the rock bone, and use the electric drill to remove the diseased air chamber inside the inner auditory canal and clear the lesion. Establish drainage.
Complication
Complications of sacral rock inflammation Complications Acute suppurative mastoiditis mastoiditis
There may be severe forehead, pain after the eyeball, eye can not be abducted, there are diplopia, and at the same time the symptoms of increased ear discharge.
Symptom
Symptoms of humeral calculus common symptoms meningeal irritation symptoms severe pain double vision bone destruction mastoiditis ear flow pus
After the necrosis of the rock tip, the dura mater is involved before and after, and the meningeal irritation is caused, causing the first branch of the trigeminal nerve and the abducens nerve paralysis. There is a severe forehead, pain after the eyeball, the eye can not be abducted, there is diplopia, and the ear is pus Increased, in 1904, Gradenigo first described the syndrome, so it is called the Grignard's three signs (ear pus, eye abductor palsy and ipsilateral eye pain), sometimes not necessarily after the ball, but there must be eyes Abductor muscle paralysis.
Examine
Examination of sacral rock inflammation
Imaging examination: X-ray film of the mastoid and CT rock scan, it can be seen that the rock bone has bone destruction. Suppurative middle ear mastoiditis has a Grignard sign (ear pus, eye abductor palsy and ipsilateral eye pain), or sudden pus in the simple mastoid opening, post-ball pain and double vision Should be highly suspected of the disease. It can be diagnosed by CT scan.
Diagnosis
Diagnosis and diagnosis of humeral rock inflammation
Papillary X-ray film and CT rock bone scan showed bone destruction in the rock bone, Grignard sign in suppurative otitis media, or sudden pus in the simple mastoid opening, severe pain after the ball and Double vision, you can confirm the diagnosis. Suppurative middle ear mastoiditis has a Grignard sign (ear pus, eye abductor palsy and ipsilateral eye pain), or sudden pus in the simple mastoid opening, post-ball pain and double vision The disease should be highly suspected, and CT scan can confirm the diagnosis.
