Edema-mass Ratio Based On Magnetic Resonance Imaging As A Preoperative Diagnostic Factor For Posterior Fossa Metastasis.

BACKGROUND: Peritumoral edema of primary brain tumors is an important cause of morbidity and mortality. The number of studies currently available on the prognostic role of peritumoral brain edema in the posterior fossa is extremely limited. OBJECTIVE: Based on the known importance of magnetic resonance imaging in diagnosing supratentorial metastases, this study aimed to investigate the effects of peritumoral edema on survival of patients with posterior fossa metastases and the preoperative diagnostic value of MRI. METHODS: Edema and mass volumes of 49 patients with posterior fossa metastasis, who underwent surgery during 2012-2016, were measured using magnetic resonance imaging. The edema/mass indices were retrospectively calculated and interpreted by evaluating the demographic, clinical, and survival data. RESULTS: The study consisted of 32 (65.3%) male and 17 (34.7%) female participants, with the mean age ± standard deviation of 47.25±29.25 (17-81) years. Among the 49 patients with posterior fossa metastases, 34 (69.4%) had carcinoma, while 15 (30.6%) had non-carcinoma metastases. The edema/mass indices of patients with carcinoma and non-carcinoma metastases were found to be 14.55±9.64 and 1.34±1.08, respectively, and the difference was statistically significant (p<0.001). The mean survival of patients with carcinoma and non-carcinoma metastases was found to be 642±11.52 days and 726±9.32 days, respectively; however, this difference was not statistically significant (p=0.787). CONCLUSION: The edema/mass ratio was found to be a significant diagnostic factor for the prediction of posterior fossa metastases. Further detailed studies are warranted to investigate the effect of edema/mass ratio on survival rate.

Surgically Treated Status Epilepticus due to Large Cortical Tuber and Long-Term Follow-Up Results.

We present a case of invasive monitoring of a patient while he was being surgically treated in the status state. Our patient was a 27-year-old male who was hospitalized for frequent seizures, which began after a head trauma at the age of 3 years. Video electroencephalography was performed, and 25 clinical seizures were observed in 24 hours. Cranial magnetic resonance imaging (MRI) revealed a right frontal lesion which was hyperintense in T2-weighted and hypointense in T1-weighted images, and a subependymal nodule. For invasive monitoring, subdural electrodes were placed on the cortex surface via a right frontal craniotomy. The patient was re-operated, and the epileptic zone resection was performed. There was no sign of neurological deficit. Histopathological examination revealed cortical tuber, and the patient was scanned for tuberous sclerosis. There was no sign of tuberous sclerosis in other organs. The diagnosis of our patient was tuberous sclerosis, cortical tuber, subependymal nodule, epilepsy, and intermediate mental retardation. Radiological diagnosis should also be considered. Cortical tuber can be confused with focal cortical dysplasia. Finally, staged resection may be performed as a surgical treatment in some cases.

Is topical fluorescein that effective in endoscopic CSF leak closure?

PURPOSE: Several diagnostic modalities are used to detect CSF leaks. Intraoperative use of intrathecal fluorescein can help to detect and localize a CSF leak simultaneously. However, it is not FDA approved, the application is invasive and has serious complications. Topical fluorescein is reported to be a safe and sensitive alternative to ITF. In this study, we aimed to evaluate the effectiveness of topical fluorescein in CSF leak closure. METHODS: This retrospective study includes 27 consecutive patients (19 women, 8 men) who underwent endoscopic endonasal CSF leak closure using topical fluorescein, between 2011 and 2017. RESULTS: In two patients, radiologic studies false positively locate the defect. ß2 transferrin and topical fluorescein tests were positive in these patients. Both cases needed a second operation. CONCLUSION: If radiologic studies fail to locate the defect properly, topical fluorescein only confirms the CSF leak, but the defect cannot be located anatomically intraoperatively.

Craniometric Analysis of Skullbase With Magnetic Resonance Imaging in Patients With Chiari Malformation.

Basilar invagination, Platibasi, increased tentorium angle, and posterior fossa hypoplasia are the anomalies associated with Chiari malformation. When Chiari is symptomatic; tonsillary ectopenia appears to be a definitive criterion for diagnosis and treatment, the detection of additional anomaly may alter the surgical outcome. The aim of this study is to investigate the relationship between tonsillar ectopia and other anomalies.The authors retrospectively reviewed 31 cases which had Chiari Malformation at our Hospital. There were 8 men (25.8%) and 23 female (74.2%). Average age of the samples is 37.93 ±â€Š12.93 years. Seventeen patients (54.8%) had tonsillar ectopia 0 to 5 mm, 14 patients had tonsillar ectopia over 5 mm. Seven patients had syrinx (22.6%), 2 patients had mild hydrocephalus (6.5%). Six patients had surgery for the treatment. The mean length of the clivus was 39.3 mm, supraoksiput length was 40.4 mm, cerebellar hemisphere length was 61.08 mm, Mc Rae line was 33.14 mm, Twinning Line was 79.4mm, and Tentorium-Twinning line angle was 40.35°. There was no significant difference between Tonsillar ectopia, syrinks, and hydrocephalus. Basilar invagination had relationship between platibasi (6 patients had platibasi according to 2 mm criteria, 2 patients had platibasi according to 5 mm criteria (P < 0.05). Patients with syrinx had relationship between Chamberlain line (P < 0.05).In the authors' study, although there was no statistically significant difference between the tonsillary ectopia and the criteria of these anomalies, the relationship between basilar invagination and platibasi was significant.

Cavernous Angioma Mimicking Meningioma.

The authors present a rare case of cavernous angioma mimicking a meningioma in a 58-year-old man who presented with a headache and dizziness. There were no neurological deficits or other neurological symptoms or signs. An extra-axial mass lesion thought to be associated with diffusely well-enhanced falx in the postcontrast sections was noted in the posterior interhemispheric fissure near the posterior part of the corpus callosum splenium. Extra-axial cavernous angiomas (cavernomas) are extremely rare lesions. They most commonly occur in the parenchyma but have been occasionally reported to arise from the dura matter. Dural cavernous angiomas arise from dural sinuses, falx cerebri, tentorium cerebelli, cranial base dura, or internal auditory canal dura and convexity. Parenchymal cavernous angiomas classically have a ring of hemosiderin surrounding the lesions observed on magnetic resonance imaging, but dural cavernous angiomas do not display the same magnetic resonance imaging characteristics and occasionally exhibit a dural tail sign due to which they can often be misdiagnosed as meningiomas.

Does the Anti-Migraine Drug Rizatriptan Affect Early Neural Tube Development in Chick Embryos?

AIM: To investigate the impact of rizatriptan on neural tube development using early chick embryos as a model organism. MATERIAL AND METHODS: A total of 36 pathogen-free Leghorn chicken eggs were selected and categorized in three groups: sham, therapeutic, and supra-therapeutic. After 24 hours, the eggs were opened and injected with sterile drugs, and then reclosed using plastic tape. After a period of 72 hours, the eggs were opened and assessed using the Hamburger-Hamilton chick embryology classification method. TUNEL staining was used to identify apoptosis, and hematoxylin-eosin staining was used to investigate neural tube closure. RESULTS: Treatment with rizatriptan significantly slowed down neural tube development. The supra-therapeutic group showed neural tube closure defects. CONCLUSION: Rizatriptan had a negative effect on neural tube closure. Further research is needed to identify a safe and effective drug for treating migraines during pregnancy.

Effect of Mannitol Infusion on Optic Nerve Injury After Acute Traumatic Subarachnoid Hemorrhage and Brain Injury.

The primary aim of this paper is to investigate the neuroprotective and antiinflammatory effects of mannitol on optic nerve injury after acute traumatic subarachnoid hemorrhage and brain injury in rat models. Traumatic brain injury (TBI) and traumatic subarachnoid hemorrhage (tSAH) were produced by a custom-made weight-drop impact acceleration device. Thirty male Wistar rats were divided into 3 groups. Group I (n = 10) was the sham group, group II (n = 10) received TBI, and group III (n = 10) received TBI + mannitol (1 mg/kg intravenously). Optic nerve tissue glutathione peroxidase (GPx) and interleukin 1 beta (IL-1ß) levels were measured 4 hours after the trauma. The authors used Kruskal-Wallis variance analysis and Mann-Whitney U tests for statistical analysis. Optic nerve tissue GPx levels were significantly higher in group III than in groups I and II (P < 0.05). Optic nerve tissue IL-1ß levels were significantly lower in group III than in group II (P < 0.05) and higher than in group I (P < 0.05).Mannitol increased the antioxidant GPx levels and decreased the IL-1ß levels, which can protect the optic nerve from secondary injury after severe acute trauma. Mannitol plays an important role in the treatment of acute severe indirect optic nerve injury after TBI and tSAH.

Evaluation of the Olfactory Function With the "Sniffin' Sticks" Test After Endoscopic Transsphenoidal Pituitary Surgery.

The aim of this study was to evaluate the olfactory function of patients who had undergone endoscopic transsphenoidal pituitary surgery. In this prospective study, the "Sniffin' Sticks" test was performed between June 2016 and April 2017 at Izmir Katip Celebi University Ataturk Training and Research Hospital. Thirty patients who were scheduled to undergo endoscopic transsphenoidal pituitary surgery were evaluated preoperatively and 8 weeks postoperatively using the Sniffin' Sticks test battery for olfactory function, odor threshold, smell discrimination, and odor identification. The patients were evaluated preoperatively by an otolaryngologist. The patients' demographic data and olfactory functions were analyzed with a t test and Wilcoxon-labeled sequential test. The study group comprised 14 women (46.7%) and 16 men (53.3%) patients. The mean age of the patients was 37.50 ±â€Š9.43 years (range: 16-53 years). We found a significant difference in the preoperative and postoperative values of the odor recognition test (P = 0.017); however, there was no significant difference between the preoperative and postoperative odor threshold values (P = 0.172) and odor discrimination values (P = 0.624). The threshold discrimination identification test scores were not significant (P = 0.110). The olfactory function of patients who were normosmic preoperatively was not affected postoperatively. This study shows that the endoscopic transsphenoidal technique for pituitary surgery without nasal flap has no negative effect on the olfactory function.

Outcomes and Complications of Endoscopic Versus Microscopic Transsphenoidal Surgery in Pituitary Adenoma.

This retrospective study aimed to define outcomes and complications of endoscopic versus microscopic transsphenoidal surgery in pituitary adenoma. Data of 94 patients who underwent transsphenoidal endoscopic (n = 45) or microscopic surgery (n = 49) between June 2000 and June 2014 for pituitary adenoma, performed at Katip Çelebi University Hospital, were retrospectively analyzed. The patients' symptomatology, type of adenoma, radiologic findings, surgical outcomes, and preoperative and postoperative complications were investigated. The total subtotal resection rate was 73.4% (69 patients) and partial resection rate was 26.6% (25 patients). Total subtotal resection rate was 77.6% (38 patients) in the microscopic group and 68.9% (31 patients) in the endoscopic group. Total resection was seen more often in the endoscopic group than in the microscopic group, with no significant difference between the groups. Four patients (8.2%) in the microscopic group had postoperative cerebrospinal fluid leak compared with 3 patients (6.7%) in the endoscopic group. Two patients (2.1%) had hematoma, with 1 patient each in the endoscopic and microscopic group. Panhypopituitarism development rate was higher in the endoscopic group (no significant difference between the 2 groups). One patient (2%) developed blindness in the microscopic group and 1 (2.2%) had meningitis in the endoscopic group. Based on this study, the total resection rate was higher in the microscopic group than in the endoscopic group. However, outcomes and complication rate did not differ significantly between the 2 surgical techniques. Both techniques have advantages and disadvantages. Prospective randomized controlled trials should be conducted to compare the 2 surgical methods.

Endoscopic endonasal transsphenoidal surgery for pituitary adenomas.

OBJECTIVE: The objective of this study was to report the efficacy, safety, and outcomes of endoscopic endonasal transsphenoidal techniques for pituitary adenomas. PATIENTS AND METHODS: A retrospective data analysis of 32 patients who underwent endoscopic endonasal transsphenoidal surgery for pituitary adenoma between February 2011 and December 2013 was performed. The patients' demographic data, clinical presentations, radiologic findings, recurrence rates, and complications were analyzed. RESULTS: There were 14 men and 18 women with age ranging from 23 to 74 years (mean age, 48.6 y). Functioning and nonfunctioning tumors were present in 22 (68.8%) and 10 patients (31.2%), respectively. Among the functioning adenomas, 8 patients (25%) had growth hormone-secreting adenomas, 6 patients (18.8%) had prolactinomas, 5 patients (15.6%) had adrenocorticotropic hormone-secreting adenomas, 2 patients (6.2%) had follicle-stimulating hormone/luteinizing hormone-secreting adenomas, and 1 patient (3.1%) had thyroid-stimulating hormone-secreting adenomas. Of the 32 patients, 20 (62.5%) had pituitary macroadenomas and 12 patients (37.5%) had microadenomas. Total-subtotal tumor resection was achieved in 75% and 45% of the microadenomas and macroadenomas, respectively. Radiologically, 60% of the macroadenomas had suprasellar and carvenous sinus extension. Postoperative cerebrospinal fluid leaks occurred in 3 patients. Two patients developed temporary diabetes insipidus. CONCLUSIONS: Endoscopic transsphenoidal surgery is an effective and safe treatment for most patients with pituitary adenoma and could be considered the first-choice therapy in these patients.

Results of decompression with middle cranial fossa approach or traumatic intratemporal fascial nerve injury.

OBJECTIVE: To present the results of the traumatic intratemporal facial nerve injury that have undergone facial nerve decompression by using middle cranial fossa (MCF) approach. STUDY DESIGN: A retrospective study SETTING: Tertiary referral center PATIENTS AND METHODS: In this study, 13 patients who developed facial paralysis due to temporal bone trauma and undergone decompression by using MCF approach in Department of Otorhinolaryngology of Izmir Katip Celebi University Research and Training Hospital between January 1993 and December 2012 were presented retrospectively. Patients were assessed in terms of side, etiology, fracture type, House-Brackmann (HB) grade, electroneuronography (ENOG), electromyography (EMG), hearing loss, operation time, and the region of the injury. RESULTS: The fracture was at the right side in 7 (53.8%) and at the left side in 6 patients (46.1%). The type of temporal bone fracture was longitudinal in 6 (46.1%), transverse in 2 (15.3%), and mixed in 5 patients (38.4%). Total axonal degeneration in EMG and ENOG were seen in all patients, who were HB grade 6 at preoperative assessment. Mean operation time was 30 days. The lesion in all patients was at the region of geniculate ganglion. There was conductive hearing loss in 7 patients (53.8%), sensorineural in 4 (30.7%), and mixed in 1 patient (7.6%); hearing was normal in 1 patient (7.6%). Seven patients (53.8%) improved to HB grade 2. CONCLUSION: In the light of the information obtained from HRCT, ENOG, and EMG, we believe that better results can be achieved with facial nerve decompression that is performed before 1 month, and geniculate ganglion region may be better controlled by MCF approach.

A rare complication of septoplasty: tension pneumocephalus without rhinorrhea.

This paper describes a tension pneumocephalus without cerebrospinal fluid leak, a rare complication of septoplasty. We present a case of tension pneumocephalus without cerebrospinal fluid leak 1 month after a septoplasty operation. Although endoscopic sinus surgery can be utilized for repair of the defect, intracranially displaced ethmoid bone fragment makes an open approach more feasible. His postoperative course was uneventful and postoperative CT scan revealed no signs of pneumocephalus. Absence of cerebrospinal fluid leak made this case unique in presentation and caused a delay in diagnosis. Severe headache after septoplasty should alert the surgeon to investigate possible intracranial complications.