STUDY OF MENINGIOMAS WITH HISTOPATHOLOGICAL AND RADIOLOGICAL CORRELATION

Background: Meningiomas are tumours originating from meningothelial cells. They are commonly located at intracranial, intraspinal or occasionally ectopic site. They show histological diversity and are categorized into three grades by WHO 2007 Classi?cation. This grading helps in predicting their behaviour and deciding treatment strategy. To study the frequency, clinical details, histological typing and grading of 50 cases of Aims and Objective: meningiomas. To evaluate diagnostic accuracy of radio-imaging and there correlation with histopathological diagnosis is made Total 50 cases of histopathologically con?rmed cases of meningiomas were studied with above mentioned Methods: aims and objectives. Analysis of histological features, typing and grading of all cases were done. Meningioma are the Result: most common extra-axial tumour. Obvious female predominance was observed. The most common histological subtype was meningothelial followed by ?broblastic. In all cases radiological diagnosis correlated with histopathological diagnosis Conclusion: Meningiomas are slow growing extra-axial tumours majority being intracranial, benign grade I followed by grade II and rarely grade III neoplasms occurring most commonly in elderly females

Extra-Axial supratentorial anaplastic ependymoma: Unusual location of an aggressive tumor, A case report

Introduction: Ependymomas are more common in the pediatric population, in whom they are commonly infratentorial. Extra axial location of a supratentorial ependymoma is extremely rare. Diagnosis: Radiologically these tumors are often misdiagnosed as meningioma or other extra axial lesions owing to their unusual location and lack of any pathognomonic features. Hence, histopathological examination becomes imperative for proper evaluation and an adequate diagnosis. Case: Herein we report a case of a supratentorial extra axial anaplastic ependymoma misdiagnosed as a metastatic tumor on radiological examination and mimicking meningioma intra operatively, located in the frontal and temporal region in a 20 year old man.

Isolated Unilateral Third Cranial Nerve Palsy : A Rare Presentation of Dengue Fever

We herein report a case of unilateral 3rd cranial nerve palsy in a 15 years old boy. It can be due to numerous aetiologies like infectious, inflammatory, malignant, metabolic or vascular. In our case the nerve palsy was preceded by history of high grade fever of 5 days. Involvement of 3rd cranial nerve started 9 days after fever onset, insidiously, presenting as Ptosis and Diplopia. No history of altered sensorium, limb weakness, diurnal variation. Routine investigation was normal. Integrated Counselling and Testing Centre (ICTC) was negative. Cerebrospinal Fluid (CSF) study revealed viral picture but was negative for neurotropic viral panel. MRI brain was essentially normal except for presence of small Lipoma over prepontine cistern. Antinuclear Antibody (ANA) and Antineutrophil Cytoplasmic Antibodies (ANCA) were negative. Serology for Dengue was sent considering the history of high grade fever associated with blanchable rash. Dengue IgM report came out to be reactive. CSF Dengue IgM also came out to be reactive. Patient was put on short course of oral steroid therapy and cranial nerve palsy improved gradually. Neurological complications of dengue is uncommon. Few cases of Cranial Nerve Involvement associated with Dengue have been reported in the literature, most of them are associated with encephalitis. But in our case Cranial Nerve involvement was not associated with Encephalitis, it was probably due to immune reactions secondary to Dengue, making this case atypical.

Primary Extra-axial Glioblastoma: Case Report and Literature Review

Glioblastoma multiforme (GBM) is the most frequent and most aggressive primary brain tumor in adults,mainly located in the cerebral hemispheres. In the literature, few cases of primary GBM have been reported to have radiographic and intraoperative features of extra-axial lesions, leading to a diagnostic dilemma. Despite the advances in imaging modalities, the diagnosis of GBM can be challenging, and it is mainly based on the histopathologic confirmation of the excised tumor. We describe the case of a 76- year-old previously healthy female patient who presented to our hospital due to speech disturbances and cognitive impairment. The diagnosis of the tumor type on magnetic resonance imaging (MRI) was difficult, as the findings were suggestive of a malignant meningioma due to the heterogeneous enhancement of a dural-based mass with a dural tail sign. Moreover, the intraoperative findings revealed an extra-axial mass attached to the dura. A histological examination confirmed the diagnosis of glioblastoma with arachnoid infiltration. The patient underwent adjuvant radiotherapy and concomitant temozolomide treatment, she had clinical improvement postoperatively, and was stable during the six months of follow-up. Glioblastoma should be considered in the differential diagnosis of primary extra-axial mass with atypical and malignant features, especially in elderly patients.

Anesthetic management for emergency caesarean section and craniotomy together: an overview of the challenge

Traumatic brain injury in a pregnant woman is a challenge for anaesthesiologist, surgeon as well as paediatrician as it involves care and management of two lives together. We hereby discuss anaesthetic management of a 23 year old pregnant woman with extra axial bleed and brain contusion and skull fracture. Since the fetus was viable without signs of fetal distress, decision of doing caesarean section followed by craniotomy was taken and our patient was discharged a week later and the baby was handed over to attendant the next day.

Comparison of Flair MRI to Contrast Enhanced T1W MRI in Selected Intracranial Pathologies for a Patient Population in North Kerala, India,

Fluid Attenuated Inversion Recovery (FLAIR) MRI of brain is sensitive in detecting parenchymal lesions, extra axial lesions such as meningoencephalitis, and leptomeningeal tumoural disease. We wanted to compare gadolinium enhanced T2W FLAIR with PC-T1W (post contrast T1 weighted) MRI sequence in detection and evaluation of meningeal and parenchymal lesions. We also wanted to compare gadolinium enhanced T1W FLAIR with PC-T1W MRI sequence in detection and evaluation of meningeal and parenchymal lesions.METHODS65 patients with clinical diagnosis of cerebral meningitis or intracranial tumoural disease were scanned on 1.5 T 16 channel MRI scanner. A standard brain protocol was used, followed by PC-T1W and post contrast FLAIR, with PC-T1W MR preceding post contrast FLAIR. Images were assessed independently by 2 radiologists who marked the technique they thought had made the meningeal and parenchymal disease more conspicuous. In case of disagreement the radiologists made a consensus determination.RESULTSPC-T2 FLAIR showed better enhancement in 100% of the intra axial lesions compared to PC-T1W images. However, PC-T1 FLAIR showed better enhancement than PC-T1W images in only 81% of the same. PC-T2 FLAIR showed better enhancement in 100% of the extra-axial lesions compared to PC-T1W images. However, PC-T1 FLAIR showed less enhancement in all the extra axial lesions.CONCLUSIONSContrast enhanced T2 FLAIR MRI showed better enhancement of parenchymal and meningeal lesions. PC-T2 FLAIR detected more number of lesions when compared to PC-T1W, aided better delineation of extra-axial mass lesions due to superior enhancement, and had a better demarcated dural tail. Post-contrast T2 FLAIR images should be included in routine protocol for contrast MRI brain study.

Extra-axial medulloblastoma in cerebellopontine angle: A report of two cases and literature review / 吉林大学学报(医学版)

Objective: To investigate the clinical features of extra-axial medulloblastoma (MB) in the cerebellopontine angle (CPA) area and analyze the imaging features and clinical prognosis, and to provide the reference for its clinical diagnosis and treatment. Methods: The clinical data of two patients diagnosed as extra-axial MB in CPA area were collected; the literature review was performed, and the clinical characteristics, diagnostic and treatment methods were analyzed. Results: Two patients were admitted to the hospital due to headache accompanied by hearing loss. The magnetic resonance imaging (MRI) results indicated a mass in the CPA area. All the two patients were treated with the cerebellopontine angle tumor resection. The operation of the two patients was successful, and the tumor located outside the axis seen in the operation, which was confirmed as MB by postoperative pathology. No recurrence or metastasis of tumor was found 15 months after follow-up. Conclusion: The possibility of MB should be considered before operation for the occupying lesions in the extra-axial CPA area. The active operation can improve the prognosis and prolong the survival of the patients.

Clinicoradiological profile of extra axial intracranial tumors

Background: Extra-axial tumors are the most common adult intracranial neoplasms. Meningiomas are the most common Extra-axial tumors. Their Clinical presentation, survival rates, and prognosis vary depending on the site and specific type of tumor, hence necessitating a detailed clinical and radiological evaluation. Materials and methods: A prospective observational study on 15 symptomatic subjects who presented to a tertiary care hospital with Supratentorial intracranial tumors confirmed by CT was done. After getting a detailed history, clinical examination and CT (including contrast) were done. Results: In the study population, 73% had meningioma. 13% had a Pituitary Adenoma. 13% had craniopharyngioma. A headache was the most commonly reported symptom (73%). Majority of meningiomas were located in convexity of the brain (36.4%) and parasagittal areas (36.4 %). Conclusions: Neuroradiology plays a key role in the identification of supratentorial extra-axial tumors with CT allowing accurate anatomical description which can go a long way in management and defining prognosis.

Comparison of T2 FLAIR and GRE-T2* WI in detection of traumatic extra-axial hemorrhage / 实用放射学杂志

Objective To explore the value of fluid-attenuated inversion recovery (FLAIR)sequence and gradient echo T2 ?weighted image (GRE-T2 ? WI)in diagnosis of acute traumatic extra-axial hemorrhage.Methods 50 patients who were diagnosed as acute traumatic extra-axial hemorrhage by plain CT underwent FLAIR and GRE-T2 ? WI in acute stage.The diagnosis consistency (Kappa ),detection rate of subarachnoid hemorrhage(SAH),epidural hemorrhage(EDH)and subdural hemorrhage(SDH)were compared.The detection rates of SAH in 8 locations among FLAIR,GRE-T2 ? WI and combination of two sequences were analyzed by Chi-square test.Results 48 patients were enrolled in the study.The diagnosis consistency of SAH between FLAIR and GRE-T2 ? WI was high (k =1.0).The detection rate of SAH was 100% for both FLAIR and GRE-T2 ? WI.Comparing with GRE-T2 ? WI and combi-nation of two sequences,FLAIR tended to misdiagnose SAH in perimesencephalic cistern (P <0.05).The diagnosis consistency of EDH between FLAIR and GRE-T2 ? WI was high (k =1.0).3 patients with EDH were all detected by FLAIR and GRE-T2 ? WI. The diagnosis consistency of SDH between FLAIR and GRE-T2 ? WI was high (k =0.943).The detection rate of 12 patients with SDH was 100% in FLAIR,and 1 patient with SDH was missed by GRE-T2 ? WI.Conclusion The detection rate of acute traumatic extra-axial hemorrhage is high for both FLAIR and GRE-T2 ? WI.Combination of two sequences can improve the accuracy of acute traumatic extra-axial hemorrhage in clinic.