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An extensive literature has validated the critical importance of a brief post-trial consolidation period for the incorporation of an experience into memory. Importantly, during this active consolidation state the memory formation is vulnerable to modification. While the subsequent stabilization of the memory makes it relatively resistant to modification, conditioned drug cues that re-activate the cue drug state association can initiate a re-consolidation process and during this re-consolidation the drug-cue association again becomes briefly unstable and sensitive to modification by post-trial treatments. Although most post-trial treatments shown to interact with memory consolidation processes have been used with instrumental learning protocols, this review is focused on recent findings that indicate that psycho-stimulant drug responses induced by apomorphine and morphine during the post-trial consolidation/re-consolidation state can become incorporated into the memory process. As a consequence, these post-trin be used to counter-condition the re-consolidated conditioned addictive drug response to substantially reduce the salience and motivational significance the conditioned association induced by the addictive drug. BACKGROUND The indications and contraindications to the endoscopic transforaminal approach for lumbar spinal stenosis are not well-defined. METHODS We performed a Kaplan-Meier durability survival analysis of patients with the following types of spinal stenosis Type I - central canal, Type II - lateral recess, Type III - foraminal, and Type IV - extraforaminal. The 304 patients consisted of 140 men and 164 women with an average age of 51.68 ± 15.78 years. The average follow-up of 45.3 years ranging from 18 to 90 years. The primary clinical outcome measures were the Oswestry Disability Index, Visual Analogue Scale, and the modified Macnab criteria. RESULTS Study patients had Type III - 151/304; 49.7%, Type I - 70/304; 23.0%, Type II - 42/304; 13.7%, and Type IV - 41/304; 13.5% stenosis. Excellent outcomes were obtained in 114 patients (37.5%), Good in 152 (50.0%), Fair in 33 (10.9%), and Poor in 5 (1.6%), respectively. Kaplan Meier (K-M) durability analysis of the clinical treatment benefit with the endoscopic transforaminal decompression surgery showed statistically significance differences (p less then 0.0001) on Log Rank (Mantel-Cox) Chi-Square testing between the estimated median (50% percentile) survival times of Type I (28 months), Type II (53 months), Type III (32 months), and Type IV (66 months). CONCLUSIONS The authors recommend stratifying patients based on the underlying compressive pathology and the skill level of the endoscopic spine surgeon to decide preoperatively whether more difficult central or complex foraminal stenotic lesions should be considered for alternate endoscopic approaches. BACKGROUND Grade V thoracic spondylolisthes is secondary to neurofibromatosis type-1(NF-1), especially combined with vertebral fusion, is rare. We reported a case of a 26 year-old female diagnosed with grade V T2spondylolisthesis and T2-T5 autofusion secondary to NF-1, which caused severe kyphotic deformity and neurological deficits, and she was treated with posterior decompression, internal fixation and fusion. CASE DESCRIPTION A 26 year-old, right-handed female admitted to the clinic due to weakness of her legs. An eye examination documented a sign of Lisch nodules in the iris. Café-au-lait macules, dermal neurofibroma of multiple forms and rubbery bumps of varying sizes could be observed on her skin. Paresis with muscle strength of 2/5 in both lower extremities with increased muscle tone and decreased muscle mass could be observed. The radiographic results indicated grade V thoracic spondylolisthesis with vertebral fusion from T2-T5 level. To alleviate the neurological dysfunction, posterior decompression, internal fixation and fusion were performed. She reported marked improvement in lower limb motor and sensory functions during the follow-up, and the muscle strength recovered to 5/5. CONCLUSIONS Grade V thoracic spondylolisthesis combined with vertebral fusion on T2-T5 level in NF-1 israre. Early surgical intervention of posterior spinal decompression with internal fixation and fusion yielded satisfactory clinical outcomes. BACKGROUND Intracranial aneurysms (IA) are associated with Moyamoya disease (MMD). There are no clinically-tested treatment guidelines that exist at this point. Reporting of cases is vital in order to better understand the underlying pathophysiology, potential ethnic predispositions and improve patient selection for intervention. METHODS Records of all patients diagnosed with MMD with concomitant IA that presented to our institution were retrospectively reviewed. Data related to demographic, clinical, MMD characteristics, aneurysm characteristics, surgical intervention and follow-up was collected from the records of each patient. Aneurysm location was categorized into circle of Willis (CoW) aneurysms (originating from the circle of Willis or its major branches) and peripheral aneurysms (arising from choroidal or lenticulostriate arteries). RESULTS 10 patients were found to have a total of 14 IA. All patients where Caucasian. 10 aneurysms (71%) were classified as CoW aneurysms and four (29%) were classified as peripheral (29%). Seven of 10 CoW aneurysms (70%) were located in the anterior circulation, while three (30%) were located in the posterior circulation Aneurysms of anterior and posterior circulations were most commonly treated with coil embolization, while peripheral artery aneurysms were most commonly treated with either cerebral revascularization alone or aneurysm excision. CONCLUSIONS Revascularization surgery appears to be an effective method of indirectly treating IA in MMD patients. Previous literature in addition to our series here demonstrate that endovascular embolization is safe and efficacious in treating IA of most locations in MMD patients. The use of open microsurgery for direct aneurysm treatment in this population possesses many challenges. INTRODUCTION Encephalocele is a common congenital malformation of the central nervous system. However, giant encephaloceles are rare. The use of folic acid supplementation and termination of pregnancies which are prenatally diagnosed with encephaloceles and other congenital malformation of the central nervous system has significantly reduced the occurrence of this type of congenital malformation especially in developed countries. METHODOLOGY This was a retrospective review over a five-year period from January 2006 to December 2010 at the Department of Neurosurgery, Regional Centre for Neurosurgery, Usmanu Danfodiyo University Teaching Hospital Sokoto, Nigeria. The records of patients with giant encephalocele were retrieved from the case notes of patients who had excision and repair for encephalocele. RESULTS Seventy-three (73) patients had excision and repair of encephalocele over the study's period. However, the records of only 50 patients were retrieved. check details Fourteen (28%) of the 50 whose records were retrieved had giant encephalocele.