Computed Tomography (CT) Scan (original) (raw)
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Computed Tomography (CT) Scan; Ring Enhancing Lesions on Brain
2015
7 ORIGINAL PROF-2613 ABSTRACT… Ring enhancing lesions are a common neurological problem seen in either gender and in all age groups. Objectives: To determine the clinical presentations and etiological factors in patients with ring enhancing lesion on CT scan brain. Design: Case series study. Period: One year. Setting: Department of medicine, Liaquat University Hospital, Hyderabad. Patients and methods: Subjects of either sex ≥12 years of age, presented with seizures, fever, focal neurological signs and deficit, headache, weight loss and vomiting and had single or multiple ring enhancing lesions on computed tomography (contrast CT brain film) were enrolled and entered in the study. CT scan brain was advised to evaluate any identified lesion and then certain specific biochemical tests were also advised to detect the particular existence etiological factor. The data was analyzed in SPSS 16 and the frequency and percentage was calculated. Results: During one year study period, total 50 ...
Ring enhancing lesions constitute significant cases in medical, surgical and radiological practice. Fifty cases were studied from 2008 to 2010 aimed to study the clinical presentation of children with ring enhancing lesions in CT scan of brain. The most common presentation of children with ring enhancing lesion in CT scan brain is seizures (76%). Seizures with focal deficit and features of raised ICT constitute (18%), only raised ICT and focal deficit (6%). Neurocycticercosis is more common in the age group of 6-10 yrs of age. Tuberculoma is the cause of raised ICT in children with single ring enhancing lesion. Neurocysticercosis is cause of raised ICT in children with multiple ring enhancing lesions.
Ring-Enhancing Lesions in the Brain: A Diagnostic Dilemma
Iranian Journal of Child Neurology, 2014
The most common radiological abnormality seen in young Indian patients with epilepsy is single small enhancing (ring/disc) computed tomographic (CT) lesions. The two most common differential diagnosis of this lesion in clinical practice include neurocysticercosis (NCC) and tuberculomas. They have similar clinical and neuroimaging features. Few researchers believe that in poor and developing countries (where both tuberculosis and NCC are common) that it is difficult to differentiate between tuberculomas and a single cysticercal granulomas. We report a case of a 6-year-old female patient who presented with complex partial seizures. The patient’s neuroimaging showed a single ring-enhancing lesion in the brain that was not differentiated between NCC and Tuberculoma. Finally, Magnetic resonance spectroscopy (MRS) was suggestive of tuberculoma that was successfully treated with antituberculosis therapy. This report highlights diagnostic difficulties with conventional investigations in sin...
International Journal of Medical Research and Review, 2020
Introduction: Multiple ring-enhancing lesions are one of the most commonly encountered neuroimaging abnormalities. A study was conducted to find the characteristic imaging findings of various ring-enhancing lesions on MRI. Materials and Methods: It was a prospective study conducted in the department of radiodiagnosis, GSL Medical College. All age groups of both gender with cerebral ring-enhancing lesions detected in contrast MR studies were taken up for spectroscopy. Patients with a history of claustrophobia and individuals with metallic implants insertion, cardiac pacemakers, and metallic foreign body in situ were excluded. The MRI scan was performed MRI PHILIPS ACHIEVA HDxt 1.5 T, the active shielded superconducting magnet of 1.5telsa magnetic field using SENSE coils for the acquisition of images. Results: Out of 30 study participants, under <45 years category tuberculoma was the common (37%) lesion whereas in >45 years category metastases was common (15%), 44% were female and 56% were males. Depicts T1 signal intensity showed hypointense signal intensity on T1W sequence in 65 (95.5%) cases. Only 4.6% of cases showed isointense signal intensity on T1W image. T2 signal intensity in 73.5% of cases showed hyperintense signal intensity. Conclusions: MRI is an excellent, non-ionizing imaging modality with multiplanar imaging capabilities for excellent grey-white matter differentiation.
Cerebral ring enhancing lesion with diffusion restriction in a South American patient
Neurologia i neurochirurgia polska
The differential diagnosis of cerebral ring enhancing lesions is usually challenging and involves the use of multiple paraclinical tools such as central nervous system (CNS) imaging and cerebrospinal fluid (CSF) studies [1,2]. These lesions can be the manifestation of a variety of pathologies, including infection, primary or secondary neoplastic processes and demyelinating diseases, amongst others. By using conventional magnetic resonance imaging (MRI), an accurate diagnosis of ring enhancing lesions is often difficult. Therefore, the use of novel imaging techniques plays a crucial role in fully characterizing and identifying the underlying pathology of such ring enhancing lesions. A 23-year-old man from the south of Chile was admitted to our Department of Neurology in Santiago, with a history of 2 weeks of multiple self-limiting episodes of involuntary clonic movements of his right face and arm, and one single episode of generalized tonic-clonic seizure. On admission, his vital signs and general examination were unremarkable. Initial neurological examination revealed mild right hemiparesis (MCR score 4) with symmetrical tendon reflexes and an ipsilateral up-going plantar reflex. Cranial nerves and sensory function were normal. Complete blood count, erythrocyte sedimentation rate and C-reactive protein were normal, together with negative antibody testing for HIV, Hepatitis B and C, and VDRL. CSF analysis showed 4.8 leukocytes per microliter, protein of 0.27 g/L, normal glucose levels, and a negative Gram stain and culture. The brain MRI showed one cortico-subcortical lesion in the left precentral frontal region (Fig. 1), mildly hyperintense to CSF on T1-weighted image, hyperintense on T2-weighted image and fluid-attenuated inversion recovery (FLAIR) image,
Evaluation of a ring enhancing lesion
BMJ (Clinical research ed.), 2015
A 49 year old previously healthy woman presented to her general practitioner with a two week history of progressive headaches, forgetfulness, and decreased visual acuity. She had no other symptoms or findings of note. On examination, she was oriented to person, location, and time. Her heart rate was 78 beats/min, respiratory rate was 18 breaths/min, and blood pressure was 116/78 mm Hg. She was afebrile and had no meningeal signs. Physical examination identified a right homonymous hemianopsia but no other neurological or cognitive deficits. There was no evidence of papilloedema. Her electrolytes, complete blood count, and C reactive protein concentration were normal. Magnetic resonance imaging (MRI) showed a single ring enhancing lesion with irregular borders.
IOSR Journals , 2019
Metabolic Mapping includes use of MRI and MR spectroscopy in differentiating various ring enhancing lesions like abscess, tumour like glioblastoma multiformae, tuberculoma, radiation necrosis and metastasis.MRI has inherent sensitivity and capability to detect ring enhancing lesions. MR spectroscopy provides information about the chemical nature of ring enhancing lesions by analyzing the presence and ratio of tissue metabolites like NAA, choline, creatine, lactate, lipid etc. Objectives: To evaluate the efficacy of metabolic mapping(MRI and MR spectroscopy) in evaluation of brain lesions that shows ring enhancement on post contrast T1 images and to determine which method is more effective. Method and materials: 40 patients with Ring enhancing lesions who were diagnosed as having abscess , tumour , metastasis, tuberculoma on MRI were subjected for MR spectroscopy using MR SIGNA EXPLORER 1.5T machine. Duration of the study: The study was carried over period of 7 months from July 2018 to January 2019. Result: 40 patients were included in study (30 males, 10 females) ranging from 10-65 years) conducted at Department of Radiodiagnosis at GCS medical college. Among them 10 patients were diagnosed as tuberculoma, 2 of neurocysticercosis, 18 as brain abscess, 2 of meningioma , 5 of brain metastases and 3 of glioblastoma multiformae. Conclusion: Both the phases of metabolic mapping i.e MRI and MR spectroscopy are efficient in characterizing ring enhancing lesions and are complementary to each other and give better results when used together rather than alone.