J Korean Soc Radiol.  2010 Sep;63(3):267-270. 10.3348/jksr.2010.63.3.267.

MR Findings of Desmoplastic Fibroblastoma: A Case Report

• Lee WC
• Kang BS
• Suh JH
• Hwang JC
• Weon YC
• Shin SH
• Kwon WJ
• Choi SH

• KMID: 2097904
• DOI: http://doi.org/10.3348/jksr.2010.63.3.267

Abstract

Desmoplastic fibroblastoma is a rare, fibrous, soft-tissue tumor that usually arises in subcutaneous tissues and skeletal muscle at various anatomic sites. We report a case of desmoplastic fibroblastoma in a 33-year-old female presented with a palpable mass in her right arm. Ultrasound images showed a hypoechoic mass lesion with internal vascularity. Magnetic resonance (MR) images showed areas of heterogeneously with high and low signal intensity on T2-weighted images, and intense enhancement on post-contrast T1-weighted images. Histopathologic examination of the resected specimen confirmed desmoplastic fibroblastoma.

MeSH Terms

Adult
Arm
Female
Humans
Magnetic Resonance Imaging
Magnetic Resonance Spectroscopy
Muscle, Skeletal
Soft Tissue Neoplasms
Subcutaneous Tissue

Figure

• 

  Fig. 1 A 33-year-old female with a 4×4×2 cm mass in the anterior aspect of the right arm. A. Color Doppler imaging shows a well-defined, hypoechoic mass with vascular signals in the peripheral and central portions of the mass. B. Axial FSE T1-weighted MR image (TR/TE = 500/20) shows slightly high signal intensity of the mass compared to that of the adjacent muscles (arrows). The mass is located in the subcutaneous layer and is attached to the right biceps brachii and brachialis muscles. C. Coronal FSE T2-weighted MR image (TR/TE = 2141/100) shows slightly low signal intensity with high signal intensity in the upper area within the mass (arrows). D. Axial FSE T1-weighted MR image (TR/TE = 602/20) obtained following contrast injection, shows marked enhancement of the mass (arrows). The mass shows mild indentation to the adjacent muscles with no evidence of invasion. E. H & E staining (× 100) shows spindle to stellate fibroblastic cells in a hypovascular collagenous matrix.

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