orbital meningioma
Introduction
Introduction to meningioma The tumor can originate in the eyelids, and can also spread with the intracranial meningioma. The more common one is the meningioma at the olfactory sulcus or the crest, mostly benign but invasive. More common in middle-aged women. Surgical treatment of meningioma, radiotherapy is not effective. The surgical approach depends on the location and extent of the tumor. Those who are confined to the iliac crest should be removed with a resection of the iliac crest to avoid recurrence. The occurrence of meningioma may be related to certain internal environmental changes and genetic variation, not caused by a single factor. May be related to radioactive exposure to brain injury, viral infection, and bilateral auditory neuroma. Therefore, prevention must be carried out in many ways. 1. Develop healthy living habits. Not carcinogenic food such as gluttony bacon, no alcohol and smoking, normal life. 2. Insist on exercising and improve your body's resistance. 3. Regularly go to the hospital to check your body, especially when you have headaches, nausea, vomiting and other feelings. basic knowledge The proportion of illness: 0.003% Susceptible people: no specific population Mode of infection: non-infectious Complications: exposed keratitis
Cause
Cause of meningioma
Cause:
The etiology of this disease is not clear, and may have certain correlation with environmental factors, genetic factors, dietary factors, and mood and nutrition during pregnancy. The pathological structure of meningiomas is diverse and can be divided into sand type, fiber type, epithelial cell type, mixed type, vascular type, endothelial cell type and sarcoma type. The latter three have a faster disease and development, and a higher degree of malignancy, which can damage the skull, the tibia and the sinuses and cause death.
Prevention
Meningiomas prevention
The occurrence of meningioma may be related to certain internal environment changes and genetic variation, not caused by a single factor, and may be related to factors such as craniocerebral trauma, radiation exposure, viral infection, and bilateral auditory neuroma. Therefore, prevention must be carried out in many aspects.
Complication
Meningiomas complications Complications exposed keratitis
Can cause exposed keratitis, and eyelid and conjunctival edema, eye movement disorders, advanced tumors often invade the entire sacral cavity, wrap the entire eyeball, invade the II, III, IV, V, VI cranial nerve, causing vision loss, eyeball Fixed equal apex syndrome.
Symptom
Symptoms of meningioma common symptoms keratitis olfactory loss conjunctival hyperemia conjunctival edema and corneal ulcer eyeball
The unilateral eyeball gradually protrudes and cannot be reset. For example, a meningioma originating from the vicinity of the olfactory sulcus can cause the eyeball to protrude downward, accompanied by olfactory loss. It originates from the vicinity of the muscle cone, and the eyeball protrudes in the median direction, causing exposed keratitis. Eyelids and conjunctival edema, eye movement disorders, advanced tumors often invade the entire sacral cavity, surrounding the entire eyeball, invading the II, III, IV, V, VI cranial nerves, causing vision loss, eyeball fixation and other sacral syndrome.
Examine
Examination of meningioma
Fundus examination revealed papilledema, and affected the retina, combined with hemorrhage and exudation, vein dilation, and eventually optic atrophy.
Visual field examination has diagnostic significance for tumor localization. Visual field defects are related to the direction of eye pressure. If the visual chiasm is involved, it can cause visual field defects in the contralateral eye. Palpation can reveal a tough, inoperable mass. X-ray films often enlarge the sacral cavity, and the optic nerve hole and sacral fissure sometimes expand, the bone is limited to absorption and hyperplasia, and sometimes calcification is also seen.
Diagnosis
Diagnosis and differentiation of meningioma
Need to be differentiated from optic glioma, optic neuritis, optic neuritis.
The distinguishing points from optic glioma are:
1 different ages, gliomas occur in children.
2 "orbital" sign is conducive to the diagnosis of meningioma.
3 Meningioma spreads along the meninges, while gliomas spread along the visual pathway.
4 Meningioma invades the dura mater and the edges are irregular.
5 Meningioma is very thin, sheath-like, and calcified.
6 Intraocular meningioma in addition to causing the expansion of the bony optic nerve hole, it is also common to the nearby anterior bed.
