Content area
Full Text
http://crossmark.crossref.org/dialog/?doi=10.1007/s00256-015-2247-9&domain=pdf
Web End = Skeletal Radiol (2016) 45:147152 DOI 10.1007/s00256-015-2247-9
http://crossmark.crossref.org/dialog/?doi=10.1007/s00256-015-2247-9&domain=pdf
Web End = http://crossmark.crossref.org/dialog/?doi=10.1007/s00256-015-2247-9&domain=pdf
Web End = http://crossmark.crossref.org/dialog/?doi=10.1007/s00256-015-2247-9&domain=pdf
Web End = http://crossmark.crossref.org/dialog/?doi=10.1007/s00256-015-2247-9&domain=pdf
Web End = http://crossmark.crossref.org/dialog/?doi=10.1007/s00256-015-2247-9&domain=pdf
Web End = http://crossmark.crossref.org/dialog/?doi=10.1007/s00256-015-2247-9&domain=pdf
Web End = http://crossmark.crossref.org/dialog/?doi=10.1007/s00256-015-2247-9&domain=pdf
Web End = CASE REPORT
Intramuscular granular cell tumor: emphasizing the stripe sign
Eun Sil Kim1 & Seun Ah Lee1 & Baek Hyun Kim1 & Chul Hwan Kim2
Received: 7 July 2015 /Revised: 11 August 2015 /Accepted: 24 August 2015 /Published online: 10 September 2015 # ISS 2015
Abstract We present a case of an intramuscular granular cell tumor in the thigh manifesting a stripe sign on magnetic resonance imaging (MRI). This MR finding may correspond with the entrapped muscle fibers within the tumor, which demonstrated parallel arrangement on histopathologic examination. In addition, other disease entities characterized by the presence of this sign such as proliferative myositis, heterotopic ossification, and muscular sarcoidosis will be reviewed.
Keywords Granular cell tumor . Body extremity . Magnetic resonance imaging . Ultrasonography . Stripe sign
Introduction
Granular cell tumors (GrCT) are rare soft tissue tumors and those of intramuscular origin in the extremities are even more uncommon [14]. A few magnetic resonance imaging (MRI) studies have evaluated benign or malignant GrCT in the extremities regardless of its intramuscular or subcutaneous location, with an emphasis on the signal intensity (SI) of the tumor. Some cases of GrCT showed a peripheral high SI around the tumors on T2-weighted images (WI) [16]. However, this finding is relatively non-specific for preoperative diagnosis.
We evaluated a case of intramuscular GrCT in the thigh that showed preservation of adjacent muscle fibers that formed a stripe sign on MRI and thus mimicked benign non-tumorous lesions, such as proliferative myositis or heterotopic ossification. We report the MRI findings of intramuscular GrCT with an emphasis on the stripe sign and review other disease entities characterized by this sign.
Case report
All procedures performed in this case report involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. This retrospective study was approved by out institutional review board, and the requirement for informed consent was waived.
A 50-year-old woman with no significant medical...