Petroclival meningiomas definition. Petroclival meningiomas (PCMs) have always been a challenge for surgeons because of their difficult anatomical location. 1,2 These tumors often displace the brain stem and the basilar artery to the opposite side. See full list on sciencerepository. Petroclival meningiomas, by definition, are tumors that originate in the upper two thirds of the clivus at the petroclival junction medial to the fifth cranial nerve. Mar 26, 2015 · They described these meningiomas as “attached at any of the lateral sites along the petroclival borderline where the sphenoid, petrous, and occipital bones meet. Dec 14, 2024 · Learn about the intricate anatomy of the petroclival region, explore common skull base pathologies such as meningiomas and chordomas, and discover modern surgical approaches—including endoscopic and image-guided techniques—aimed at improving patient outcomes. Jul 26, 2024 · Petroclival meningioma is a benign and slow-growing tumor that arises from the outer covering of the brain (meninges) and is located deep within the skull base. Because these tumors often grow slowly and might not cause symptoms for years, they can be large by the time they are diagnosed. At presentation, many patients complain of headaches, gait disturbances and cranial neuropathies. They are seated medial to the internal auditory meatus and posterior to the gasserian ganglion. The authors report on the outcome in a series of patients with PCM treated Petroclival; Approaches Introduction and Meningiomas account for 20 to 25% of all intracranial tumors meningiomas, in posterior petroclival Of posterior for 5 to 11% of meningiomas 0. Brain CT scan and MRI are routinely used to evaluate Apr 15, 2015 · Petroclival meningiomas are most commonly found in women around 50 years of age and have the general tendency to grow and affect several cranial nerves. org Feb 15, 2025 · Introduction Petroclival meningiomas are relatively rare among meningiomas (~1%) that arise from the upper two-thirds of the clivus at the petroclival junction. Petroclival tumors are defined as arising from the uppe two thirds of the clivus, medial to the trigeminal nerve at the pe roclival junction. 15% of intracranial the trigeminal nerve at the as to female ration is 1 to 4. Abstract ount for 20 to 25% of all intracranial tumors and 10% are seen in the posterior fossa. The role of radiology in providing precise indications regarding the tumour site and aggressiveness plays a major part in . ” Petroclival meningiomas are lesions arising from the upper two thirds of the clivus with dural attachment centered on the petroclival junction. Treatment options include surgery, with a variety … Petroclival meningioma (PCM) is considered among the most difficult tumors to be treated by microneurosurgery because of its location and its relation to critical structures. uafr b18evfiu rugwi txke drb to ru193 sdenj c3k7kn 7r