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Fried egg sign: A typical ultrasonography feature of neurolymphomatosis
Ying-Chieh Lee1,2, Guo-Shu Huang1, Wei-Chou Chang1
1Department of Radiology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, ROC.
Journal of Clinical Ultrasound : JCU
|June 19, 2021
Abstract:
Neurolymphomatosis (NL) is a rare condition caused by non-Hodgkin's lymphoma or leukemia. We present a case of NL and describe ultrasound features, including the "fried egg sign" in which there is a clear demarcation between an avascular echogenic core and a hypoechoic vascularized peripheral zone that may help to distinguish NL from primary nerve sheath tumors.

