Showing papers on "Intracranial Lipoma published in 2014"

Pericallosal Lipomas: A Series of 10 Cases with Clinical and Radiological Features.

Abstract: Aim A pericallosal lipoma is a fat-containing lesion occurring in the interhemispheric fissure closely related to the corpus callosum, which is often abnormal. This is the most common location for an intracranial lipoma. In this study, we aim to report on the clinical and radiographic aspects of ten patients diagnosed with pericallosal lipomas. Material and methods A retrospective analysis of patients who presented to the neurology and neurosurgery outpatient clinics of Kayseri Training and Research Hospital between 2010 and 2014 revealed that 10 patients had the diagnosis of pericallosal lipoma. The clinical and magnetic resonance imaging data were obtained by reviewing their files. Results Ten patients with an average age of 35.8 years (11-80 years) were included in the study. The mean follow-up was 17 months (8-31 months). No neurological deficits related to the lesions were found during neurological examination in any of the patients. Four patients had tubulonodular lipomas while the other 6 presented with curvilinear lipomas. Four patients (40%) displayed a coexistent corpus callosum hypoplasia. In contrast to previous reports, 3 of these patients had a curvilinear lipoma while the remaining one had tubulonodular lipoma. Also, one of the patients displayed plaque lesions attributable to multiple sclerosis. During the follow-up period, no growth in the lipomas was recorded in any of the patients. No surgical intervention was performed as none of the patients displayed symptoms caused by the lipoma. Conclusion In this study, we found a stronger association of corpus callosum hypoplasia with posteriorly situated curvilinear lipomas. Our results are in disagreement with previous studies, which suggested corpus callosum anomalies were more often associated with anteriorly situated tubulonodular lipomas. Pericallosal lipomas are benign, self-limiting or slow-growing lesions that generally remain asymptomatic. These lesions occur in the midline and surround critical neurovascular structures. Therefore, surgical intervention should be avoided in asymptomatic cases.

Intracranial lipomas: clinical and imaging findings.

Abstract: Purpose Intracranial lipomas are rare congenital malformations. The most common location of intracranial lipoma is the midline cerebral structures. The most frequently seen symptoms are headaches, seizures, psychomotor retardation and cranial nerve deficits. This study aimed to evaluate the clinical and radiological findings of 14 patients with intracranial lipoma. Materials and methods The study comprised 14 patients diagnosed with intracranial lipoma from computed tomography and magnetic resonance imaging taken after presentation at our hospital with headaches or seizures between January 2008 and April 2012. The cranial CT and MR images were evaluated by two experienced specialist radiologists. The lipoma localisation, size, morphology, any concomitant anomalies and findings of compression were recorded. Results The study comprised 14 patients diagnosed with intracranial lipoma. The lipoma was observed to be located pericallosal, adjacent to the mamillary body and the optic chiasm, interhemispheric, in the quadrigeminal cistern and sylvian fissure. 3 patients had a history of seizures. The others had headaches. Conclusions If there are no concomitant central nervous system (CNS) anomalies, there are no significant clinical or neurological findings apart from headaches.

CT and MR Imaging Characteristics of Intravestibular and Cerebellopontine Angle Lipoma.

Abstract: Intracranial lipoma is an uncommon entity. A rare type of tumor in the internal auditory canal (IAC) and the cerebellopontine angle (CPA) is lipoma. There are a few case reports in the literature related to intravestibular lipoma. Herein, we report a case of lipomas within the cerebellopontine angle and vestibule of the inner ear in a patient with tinnitus and dizziness. The patient was evaluated with a 1.5 T magnetic resonance imaging (MRI) system. MRI and CT showed the masses in the left CPA and the left IAC. These lesions were hyperintense on both T1- and T2 weighted images and showed no enhancement after gadolinium administration. Conservative management was suggested. Histopathological diagnosis is rarely necessary with the widespread use of magnetic resonance imaging. Considering significant morbidity during resection, conservative follow-up is the best approach for CPA and IAC lipoma.

Incidental Finding in a Headache Patient: Intracranial Lipoma

Abstract: A 60 year old female, with a history of atrial fibrillation who was on warfarin therapy, presented to our emergency department with chief complaint of the most severe headache that she ever had. Her vital signs, systemic and neurological examinations were normal. She had emergency computed tomography (CT) of the brain with suspicion of intracranial hemorrhage that revealed a lesion in fat dansity in the lateral ventricle and interhemispheric fissure (Figure a). Her international normalized ratio was 3,2. She underwent cranial magnetic resonance imaging (MRI) that revealed a hyperintense lesion in T1 and T2 sequances in the lateral ventricles, pericallosal area and interhemispheric fissure that did not show contrast enhancement (Figure b and c). After the symptomatic relief by analgesics she was discharged from the emergency department for out-patient follow-up. Figure Image (a) shows cranial computed tomography. There is a homogenously hypodense lesion measuring 33 mm × 30 mm in the lateral and third ventricles with about −101 to −110 Hounsefield unit. Image (b) and (c) show magnetic resonance ... Intracranial lipomas are rare and benign congenital malformations accounting for 0,1% to 0,46% of all intracranial tumors.1 Since half of all cases are asymptomatic, they are usually an incidental finding during neuroimaging studies. Headache is the most common symptom in adults if it becomes symptomatic.2 The deep interhemispheric fissure, especially the corpus callosum, is the most common localization of intracranial lipomas.1 Intracranial lipomas are often associated with other malformations of the central nervous system, such as callosal agenesis or hypogenesis, spina bifida or a cranium bifidum.1,3 Noncontrast cranial CT and brain MRI allow definitive diagnosis. The appearance of the corpus callosum lipoma on the cranial CT scan is quite typical, with the low attenuation seen only in adipose tissue, which ranges from −40 to −100 hounsfield units.4,5 In the brain MRI the lesion presents characteristics of fatty tissue, with a hyperintense signal in both T1 and T2-weighted studies.6 Most lipomas are treated conservatively and rarely requires neurosurgical treatment because of their benign nature.1 Our patient did not have any accompanying lesion and was discharged to follow-up as an out-patient.

Multiple intracranial lipoma

Abstract: Intracranial lipomas are rare congenital, non-neoplastic lesions discovered incidentally on computerised tomography (CT) or magnetic resonance imaging (MRI) with an incidence rate of less than 0.1% of all intracranial tumours. Most lipomas are asymptomatic pericallosal lesions sometimes presenting with seizures or headache. Corpus callosum agenesis and defects of midline structures differentiation may be present. Callosal lipomas are of two types: Anterior bulky tubulonodular variety associated with forebrain and rostral callosal anomalies, and posterior ribbon-like curvilinear lipoma generally seen with a normal or near normal corpus callosum. Corpus callosal hypogenesis/agenesis is seen in up to 90% of anterior and 30% of posterior pericallosal lipomas. The association of corpus callosal lipoma with choroid plexus lipoma is variable with its reported incidence rate being 20-50%. A 50-year-old patient was referred to our department for CT scan of brain with history of recent onset of headache and one episode of seizure. We present the imaging findings in this rare case of callosal tubulonodular lipoma having prominent intralesional vessels and extensive calcification with a concomitant intraventricular lipoma in a patient with dysgenetic corpus callosum.

Intracranial lipoma in Quadrigeminal Cistern

Abstract: A 37-year-old rural lady with an intracranial lipoma of the quadrigeminal region with persistent headache is reported. We describe findings of imaging studies such as CT & MRI with review of literature. Diagnosis of Quadrigeminal Cistern Lipoma is always certain on imaging, and therefore histopathological confirmation is never practically required. However from a theoretical point of view, there are many other lesions which can present in this cistern on imaging.

Quadrigeminal cistern lipoma mimicking intracranial air

Abstract: Intracranial lipoma concomitant with traumatic pneumocephalus is very rare and, to the best of our knowledge, there has been no report describing this condition. It may be difficult to distinguish lipoma from intracranial air only with CT, but it is necessary to avoid overtreatment. We report a case of quadrigeminal cistern lipoma mimicking intracranial air in a patient with traumatic pneumocephalus.

Incidental detection of intra-cranial lipoma in patient with quadriparesis.

Abstract: Magnetic Resonance Imaging (MRI) of brain is a non-invasive investigation which is performed frequently now-a-days in clinical neurological practice. Many incidental findings may be seen on MRI brain scans, which may be of little clinical significance. Knowledge on these entities is important, for a clinician to limit unnecessary further evaluations. Here is a description of a case of an incidentally detected, posterior peri-callosal, intracranial lipoma (a rare entity) which had occurred in a patient with quadriparesis, followed by a brief discussion on the types of intracranial lipomas and their clinical significances. A 65-year-old male presented with weakness of both upper limbs and lower limbs of 6-months duration. On examination, his tone was found to be spastic, his deep tendon reflexes were exaggerated and he had bilateral plantar extensor. A provisional diagnosis of spastic quadriparesis was made. Magnetic Resonance Imaging of cervical spine revealed spondylosis with cord compression at the level of C4-C6 vertebral level, which explained the cause of quadriparesis. Interestingly, MRI of his brain revealed a homogenously hyperintense lesion which was noted in T1 weighted images (A), at posterior part of corpus callosum, around the splenium. The lesion was hypointense in T2 (B) images and hyper intense in FLAIR (C) images, which was suggestive of a peri-callosal curvilinear lipoma. Patient was referred to neurosurgery department and he got operated for cervical spondylosis, with significant clinical improvement after surgery.