Giant Lipomatosis of the Sciatic Nerve: Unique Magnetic Resonance Imaging Findings.
Lipomatosis of the nerve, also known as fibrolipomatous hamartoma, is characterized by the infiltration of the nerve by fibro-fatty tissue. The affected nerve becomes thicker, and it simulates a mass lesion. Lipomatosis usually affects the median nerve and lipomatosis of the sciatic nerve is extremely rare. Magnetic resonance imaging (MRI) is the key to diagnosis, and it is usually pathognomonic. In this report, MRI and diffusion-weighted MRI findings of a case of a giant sciatic nerve lipomatosis without macrodactyly are presented. The MRI findings are unique, and awareness of the MRI features of this rare soft tissue mass may prevent unnecessary biopsies and surgeries.
Radiology Department, Ataturk Training and Research Hospital, Izmir Katip Celebi University, Izmir, Turkey.
Ali Firat
AF
Sarp
Radiology Department, Tepecik Training and Research Hospital, Izmir, Turkey.
Yeliz
Y
Pekcevik
Diffusion Magnetic Resonance Imaging; Lipomatosis; Magnetic Resonance Imaging; Sciatic Nerve
Skeletal Radiol. 1999 May;28(5):260-4
10424331
J Magn Reson Imaging. 2008 Nov;28(5):1195-200
18972359
Radiographics. 2004 Sep-Oct;24(5):1433-66
15371618
Skeletal Radiol. 2006 Mar;35(3):180-4
16283177
Microsurgery. 2009;29(1):66-71
18942654
Magn Reson Imaging Clin N Am. 2011 Feb;19(1):159-80
21129640
J Magn Reson Imaging. 2002 Mar;15(3):302-7
11891975