J Korean Soc Magn Reson Med.
2011 Aug;15(2):170-175. 10.13104/jksmrm.2011.15.2.170.
Ancient Schwannoma of the Thigh mimicking a Plexiform Malignant Peripheral Nerve Sheath Tumor: A Case Report
- Affiliations
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- 1Department of Radiology, Daejeon St. Mary's Hospital, The Catholic University of Korea. yslee1074@medimail.co.kr
- 2Department of Orthopedic Surgery, Daejeon St. Mary's Hospital, The Catholic University of Korea.
- 3Department of Pathology, Daejeon St. Mary's Hospital, The Catholic University of Korea.
- KMID: 2000067
- DOI: http://doi.org/10.13104/jksmrm.2011.15.2.170
Abstract
- Ancient schwannoma is a rare variant of schwannoma and a slow growing benign tumor associated with degeneration that may be diagnosed as a malignant tumor, because it presents with a large size and an inhomogeneous signal intensity. The main differential diagnosis of plexiform soft tissue tumor includes plexiform neurofibroma, malignant peripheral nerve sheath tumor (MPNST). In this case, we describe the MRI findings in a case of ancient schwannoma involving left thigh of a 63-year-old woman mimicking a plexiform MPNST. The tumor appeared as an inhomogeneous signal intensity and multinodular appearance, causing misdiagnosis as a plexiform MPNST.
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