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CC BY-NC-ND 4.0 · Indian J Radiol Imaging 2011; 21(03): 228-230
DOI: 10.4103/0971-3026.85374
Neuroradiology

Case Report: Floating fat globule within an arachnoid cyst

Jayanand Sudhir
Department of Neurosurgery, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, India
,
Chittur Viswanathan Gopalakrishnan
Department of Neurosurgery, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, India
,
Sathia Prabhu
Department of Neurosurgery, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, India
,
Swati Chinchure
Department of Radiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, India
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Abstract

Intralesional floating fat globules have been reported in cystic lesions such as teratoma of the ovary and dermoid of the head and neck but not within intracranial lesions. Fat globules dispersed within the subarachnoid space are a known imaging finding of ruptured intracranial dermoid. We report a unique case of an intralesional solitary floating fat globule within a multicompartmental arachnoid cyst, with varying locations on serial imaging. We also put forward a hypothesis for the pathogenesis of fat within an arachnoid cyst. To the best of our knowledge, this is the first such report in the literature.

Keywords

Arachnoid cyst - intralesional fat - magnetic resonance imaging


Publication History

Article published online:
30 July 2021

© 2011. Indian Radiological Association. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).

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