Kashyap Ravindar, Kiran Rajkumar Swathi, Shivakrishna Satkuri, Nagarajan Krishnan
Department of Radio-Diagnosis, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry, India.
J Neurosci Rural Pract. 2022 Oct-Dec;13(4):759-763. doi: 10.25259/JNRP-2022-1-39-R2-(2332). Epub 2022 Oct 22.
Intracranial lipomas are rare congenital malformations which are present in choroid plexus or subarachnoid locations along the corpus callosum and cisterns. Most of them are identified incidentally during neuroimaging studies done for other indications. Sometimes, they may be associated with other anomalies such as agenesis of corpus callosum and vascular malformations. In magnetic resonance imaging (MRI), they may be associated with chemical shift artifact (CSA) due to their lipid content and can mimic other more serious intracranial lesions. This effect seen in gradient echo MRI sequences can also be used to confirm the presence of these lesions. We report the imaging findings of six patients with intracranial lipomas that showed this chemical shift artifact with a review of the literature.
颅内脂肪瘤是罕见的先天性畸形，存在于脉络丛或沿胼胝体和脑池的蛛网膜下腔位置。它们大多在因其他指征进行的神经影像学检查中偶然发现。有时，它们可能与其他异常有关，如胼胝体发育不全和血管畸形。在磁共振成像（MRI）中，由于其脂质含量，它们可能与化学位移伪影（CSA）相关，并可模仿其他更严重的颅内病变。在梯度回波MRI序列中看到的这种效应也可用于确认这些病变的存在。我们报告了6例显示这种化学位移伪影的颅内脂肪瘤患者的影像学表现，并对文献进行了综述。
