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Inferior vena cava syndrome (IVCS) is a very rare constellation of symptoms resulting from either obstruction or stenosis of the inferior vena cava. It can be caused by physical invasion or compression by a pathological process, or by thrombosis within the vein itself. It can also occur during pregnancy. Symptoms including high venous pressure ...
Nerve compression syndrome, or compression neuropathy, or nerve entrapment syndrome, is a medical condition caused by chronic, direct pressure on a peripheral nerve. [1] It is known colloquially as a trapped nerve , though this may also refer to nerve root compression (by a herniated disc , for example).
Aortocaval compression syndrome may cause syncope, restlessness, dizziness, headache, tinnitus, visual disturbances, numbness or paresthesia of the limbs, abdominal/chest discomfort or pain, nausea, and vomiting. [4] Some patients may be asymptomatic. [5]
While the procedure has been reported to be generally safe for MS patients, [13] [41] [46] severe complications related to the angioplasty and stenting that have been reported include intracranial hemorrhage, stent migration into a renal vein, thrombosis and nerve compression syndrome of cranial nerves XI and XII.
The vestibulocochlear nerve consists mostly of bipolar neurons and splits into two large divisions: the cochlear nerve and the vestibular nerve. Cranial nerve 8, the vestibulocochlear nerve, goes to the middle portion of the brainstem called the pons (which then is largely composed of fibers going to the cerebellum).
The most common causes of cord compression are tumors, but abscesses and granulomas (e.g. in tuberculosis) are equally capable of producing the syndrome. Tumors that commonly cause cord compression are lung cancer (non-small cell type), breast cancer, prostate cancer, renal cell carcinoma, thyroid cancer, lymphoma and multiple myeloma.
Hence, leading to symptoms of cervicocranial syndrome. [20] To decompress the pressure on the nerves, the tumor is removed and the foramen through which the spinal nerve roots travel through is enlarged to allow the nerves to pass through so that symptoms of cervicocranial syndrome can be reduced and the nerves are sending signals.
The constellation of symptoms caused by craniocervical instability is known as "cervico-medullary syndrome" [4] and includes: [5] [6] [7] Anxiety disorder; Bobble-head doll syndrome, a sensation that the skull may fall off the cervical spine; Clumsiness and motor delay; Cognitive and memory decline; Double or blurred vision; Dysphagia, or the ...