1/3. Haemangiopericytoma of the trigeminal nerve.A 41-year-old man presented with a 4-year history of progressive right-sided diplopia on lateral gaze and right nasolabial paraesthesia. A CT revealed minor bone erosion of Meckel's cave and of the right petrous apex by a uniformly enhancing lesion at the base of the skull. magnetic resonance imaging on three occasions over 2 years showed tumour, measuring 4 cm in diameter, with features suggestive of a trigeminal neuroma. At surgery the lesion had the macroscopic appearance of a giant schwannoma. Histopathological findings were that of a meningeal haemangiopericytoma (HPC) of the trigeminal nerve. Intracranial HPC are rare and aggressive tumours of the central nervous system. They usually arise from the falx, tentorium and dural sinuses. The present case is unique as it originates from a cranial nerve.- - - - - - - - - - ranking = 1keywords = paraesthesia (Clic here for more details about this article) |
2/3. Orofacial paraesthesia: an unusual presentation of acoustic neuroma.patients with acoustic neuromas commonly present with unilateral hearing loss, tinnitus and unsteadiness. An uncommon initial feature is involvement of the trigeminal nerve. The unusual feature in the case reported here was orofacial paraesthesia, which preceded hearing loss by 3-4 years. diagnosis was made following a referral by the patient's dentist.- - - - - - - - - - ranking = 5keywords = paraesthesia (Clic here for more details about this article) |
3/3. Temporary trigeminal disorder as a result of pneumocephalus after subarachnoid block.A patient was scheduled for inguinal herniorrhaphy under subarachnoid block. Lumbar puncture was difficult and several attempts were needed before it could be achieved. During the immediate postoperative period, the patient developed paraesthesia and anaesthesia on the right side of the face, mostly in the nose, cheek and upper lip areas. A CT scan showed a small pneumocephalus at the level of the brainstem. The symptoms persisted for approximately 70 min, after which they disappeared.- - - - - - - - - - ranking = 1keywords = paraesthesia (Clic here for more details about this article) |