scholarly journals A discrepancy between clinical course and magnetic resonance imaging in a case of non-herpetic acute limbic encephalitis

2013 ◽  
Vol 5 (2) ◽  
pp. 8
Author(s):  
Naoto Kohno ◽  
Yuko Kawakami ◽  
Chizuko Hamada ◽  
Genya Toyoda ◽  
Hirokazu Bokura ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Limbic Encephalitis ◽  
Time Lag ◽  
Pulse Therapy ◽  
Symptomatic Improvement ◽  
Low Grade ◽  
Resonance Imaging ◽  
Steroid Pulse ◽  
Magnetic Resonance Imaging Mri

We report the case of a 64-year old man who presented memory disturbance, low-grade fever, weight loss, and bilateral hand tremors for three months. He was diagnosed with non-herpetic acute limbic encephalitis (NHALE). Follow-up magnetic resonance imaging (MRI) revealed new lesions after symptomatic improvement following steroid pulse therapy. This may indicate that there is a time lag between the disturbance or recovery of neurons and astrocytes. Thus, other lesions might occasionally appear during convalescence in patients with NHALE, even if only minimal lesions were found on the initial MRI.

A case report of isolated orbital vasculitis mimicking retinal migraine: A potential cause of recurrent transient monocular blindness and ipsilateral headache

Cephalalgia ◽  
2018 ◽  
Vol 39 (6) ◽  
pp. 792-798
Author(s):  
Ji-Hyung Park ◽  
Kyung-Ah Park ◽  
Jihoon Cha ◽  
Sung Tae Kim ◽  
Chin-Sang Chung ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Differential Diagnosis ◽  
Case Report ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Vessel Wall ◽  
Pulse Therapy ◽  
Resonance Imaging ◽  
Steroid Pulse ◽  
Transient Monocular Blindness

Background Retinal migraine is an important differential diagnosis of recurrent transient monocular blindness accompanied by headache when other etiologies are excluded. Here, we report a case of orbital vasculitis which initially mimicked retinal migraine. Case report A 47-year-old woman had recurrent episodes of fully reversible transient monocular blindness accompanied by ipsilateral headache for 15 months. The patient’s neuroimaging and cardiac and ophthalmologic evaluations were normal. With a diagnosis of retinal migraine, her symptoms remitted in response to prophylactic treatment with topiramate and propranolol for 8 months. Three months after discontinuation of medications, transient monocular blindness recurred. High-resolution vessel wall magnetic resonance imaging revealed enhancement of the ipsilateral orbital vessels. Isolated orbital vasculitis was diagnosed. Complete remission of transient monocular blindness was achieved after steroid pulse therapy. Discussion Isolated orbital vasculitis should be considered in differential diagnosis of recurrent transient monocular blindness and ipsilateral headache. High-resolution vessel wall magnetic resonance imaging can be helpful for the diagnosis.

scholarly journals Classification on Magnetic Resonance Imaging (MRI) Brain Tumour using BPNN, SVM and CNN

2019 ◽  
Vol 8 (3) ◽  
pp. 8601-8607
Keyword(s):  
Neural Network ◽  
Magnetic Resonance Imaging ◽  
Image Segmentation ◽  
Magnetic Resonance ◽  
Brain Tumour ◽  
Support Vector ◽  
Low Grade ◽  
Resonance Imaging ◽  
Mri Brain ◽  
Magnetic Resonance Imaging Mri

In this works, the main objective is to detect the high grade gliomas (HGG) and low grade gliomas (LGG) from Magnetic Resonance Imaging (MRI) Brain Tumour images by applying the efficient image segmentation and classify among them. So hybrid image segmentation techniques applied in this work, first one is canny edge detection which is used to locate the boundary of the image and second is fuzzy c-mean clustering which is used to clubbed together of the similarity intensity value into clusters. Also further eight feature extracted using Intensity based Histogram and GrayLevel Co-occurrence Matrix (GLCM). Now three classifiers learning algorithm applied in this system, first one is backpropogation neural network (BPNN) which consists of multi-layer perceptrons to solve the complex problem for the given inputs. Second one is convolution neural network (CNN) are the part of neural networks which have very effective in areas such as image recognition and image classification. Third is Support vector machine (SVM) which can be used for both classification and regression challenges. Each of one is evaluated performance based on different techniques. It found that SVM and CNN gives 88% accuracy for this work.

scholarly journals Magnetic Resonance Imaging Features of Diffuse Cavernous Hemangioma of the Uterus Misdiagnosed as a Low Grade Sarcoma: A Case Report

2020 ◽  
Vol 17 (3) ◽  
Author(s):  
Behnaz Moradi ◽  
Narges Izadi-Mood ◽  
Mohammadreza Chavoshi ◽  
Elham Shirali ◽  
Fariba Yarandi ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Cavernous Hemangioma ◽  
Imaging Modality ◽  
Vascular Tumor ◽  
Low Grade ◽  
Imaging Features ◽  
Resonance Imaging ◽  
Diffuse Cavernous Hemangioma ◽  
Magnetic Resonance Imaging Mri

: Uterine cavernous hemangioma is a rare vascular tumor that is more commonly reported as an acquired disease in pregnant women. Rarity of the case impeded the radiologist to be able to find characteristic imaging findings to diagnose the disease before surgery. We report a 40-year-old premenopausal woman with cavernous hemangioma of the uterus that was misdiagnosed as a low-grade sarcoma because of the non- typical imaging feature of this pathology that has not been reported before. The ultrasound exam of the patient only demonstrated global enlargement of the myometrium. Magnetic resonance imaging (MRI) showed diffuse myometrial edema with multiple linear low signal strands, without endometrial involvement and with mild restriction in diffusion-weighted imaging (DWI) that resulted in a lobulated border of uterine contour. MRI could be a helpful imaging modality for proper diagnosis of uterine hemangioma before surgery.

scholarly journals Impresión diagnóstica clínico-radiológica de pituicitoma, presentación de dos casos clínicos

2017 ◽  
Vol 3 (3) ◽  
pp. 41-44
Author(s):  
Paula Andrea Moreno Lucero ◽  
Angélica María Fonseca Niño ◽  
William Rojas García ◽  
María Claudia Rivera
Keyword(s):  
Magnetic Resonance Imaging ◽  
Pituitary Adenoma ◽  
Magnetic Resonance ◽  
Clinical Manifestations ◽  
Rare Condition ◽  
Low Grade ◽  
Resonance Imaging ◽  
Radiological Findings ◽  
Magnetic Resonance Imaging Mri ◽  
Clinical Cases

Pituicitoma es un tumor único de bajo grado, originado en las células magnocelulares de la neurohipófisis, o en el infundíbulo. Es una entidad rara, que afecta a los adultos. Las manifestaciones clínicas dependen de la localización y el tamaño, pudiendo simular un adenoma hipofisiario, pues también puede comprometer cualquier eje hipofisiario. El diagnóstico se realiza por medio de resonancia magnética nuclear (RMN) y biopsia, y su tratamiento puede ser por medio de medicamentos o cirugía.En este articulo presentamos dos casos clínicos de dos adultos con pituicitoma, quienes tuvieron hallazgos radiológicos similares.Abstract Pituicytoma is an only low-grade tumor which is originated from magnocellular cells in neurohypophysis or in infundibulum. It is a rare condition that affects adults. The clinical manifestations depends on the location and size because it is similar to a pituitary adenoma, so it produces nonspecific damage to the pituitary axis. For the diagnosis is usually performed with Magnetic Resonance Imaging (MRI) and biopsy and treatment of this disease may be with drugs or surgery.In this article we show two clinical cases of two adults with pituicytoma who had similar radiological findings.

scholarly journals Post-operative meningeal thickening seen on magnetic resonance imaging

2021 ◽  
Vol 32 (2) ◽  
pp. 207-211
Author(s):  
Rafaela Queiroz de Morais ◽  
Rodrigo M. da Silva ◽  
Diogo G. Corrêa
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Posterior Fossa ◽  
Low Grade ◽  
Leptomeningeal Dissemination ◽  
Resonance Imaging ◽  
Posterior Fossa Tumors ◽  
Neurosurgical Patients ◽  
Meningeal Dissemination ◽  
Magnetic Resonance Imaging Mri

Posterior fossa tumors are relatively common in children, and the meningeal dissemination of these tumors is well established in the literature. Although leptomeningeal dissemination is more common in high-grade tumors, even low-grade tumors can generate meningeal metastases. In this case report, we would like to discuss the importance of leptomeningeal dissemination assessment of posterior fossa tumors in children, in the preoperative period, through the entire neuroaxis magnetic resonance imaging (MRI). This is important since transient meningeal thickening is very common in the postoperative periods of neurosurgical patients, and can be found for up to 5 or 6 years after surgery, causing these patients to undergo prolonged follow-ups and repeated MRIs and lumbar punctures.

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