World Neurosurg
-
The utility of virtual and augmented reality based on functional neuronavigation and intraoperative magnetic resonance imaging (MRI) for glioma surgery has not been previously investigated. ⋯ Combining virtual and augmented reality based on functional neuronavigation and intraoperative MRI can facilitate resection of gliomas involving eloquent areas.
-
The aim of this study was to clarify the correlation between clinical features (especially cyst formation and cavernous sinus invasion) and minor secretion of anterior pituitary hormones, especially adrenocorticotropic hormone (ACTH) and gonadotropin, by clinically nonfunctioning pituitary adenomas (CNFPAs) in cell culture. ⋯ Minor secretion of ACTH and gonadotropin may be related to clinical features, especially cystic changes and invasiveness of CNFPAs, suggesting that our cell culture method could be helpful for elucidating the mechanisms of pituitary cyst formation and the invasiveness of CNFPAs.
-
Despite the rarity of epidermoid cysts in the chiasmatic region, their surgical treatment is particularly complicated because of the tendency toward massive dissemination of the epidermoid masses along cerebrospinal fluid pathways and significant deviation of the tumor from the midline. ⋯ Removal of epidermoid cysts in the chiasmatic region using an anterior extended transsphenoidal endoscopic approach may be an alternative to transcranial microsurgery operations. This technique is widely accepted as an approach to this area.
-
Observational Study
The Value of Short-term Pain Relief in Predicting the 1-month Outcome of Lumbar Transforaminal Epidural Steroid Injections.
Clinical management after epidural steroid injections of patients with radiculopathy secondary to a lumbar disc herniation is uncertain. It is the aim of this study to determine whether short-term alleviation of leg pain after computed tomography-guided transforaminal epidural steroid injections can predict the 1-month outcome. ⋯ The results of this study can guide physicians in managing patients with lumbar disc herniation: a ≤50% leg pain relief within 1 week after a transforaminal epidural steroid injection predicts an unfavorable 1-month outcome and suggests that other treatment options may be considered.
-
Case Reports
Recurrent olfactory neuroblastoma in remote leptomeninges, mimicking intracranial meningioma.
Olfactory neuroblastoma (ONB) is an uncommon neoplasm that arises from olfactory epithelium in the nasal cavity near the cribriform plate. Although local recurrence or direct extension along olfactory epithelium and metastasis to the central nervous system has been reported, remote leptomeningeal metastasis is quite rare. In our report of a leptomeningeal metastasis of ONB without recurrence of primary site, we discuss the possible pathogenesis of this rare phenomenon with a review of the literature. ⋯ ONB is a locally aggressive tumor, but it also potentially spreads to remote leptomeninges via blood or cerebrospinal fluid. Therefore, careful evaluation is needed not to misdiagnose a meningioma and delay the treatment. Moreover, understanding the route of remote leptomeningeal metastasis and en-bloc resection of tumor at first operation might reduce leptomeningeal metastasis, irrespective of surgical corridors.