Nonossifying fibroma: Characteristics at MR imaging with pathologic correlation

Won Hee Jee, Bo Young Choe, Heung Sik Kang, Kyung Jin Suh, Jin Suck Suh, Kyung Nam Ryu, Yeon Soo Lee, In Young Ok, Jung Man Kim, Kyu Ho Choi, Kyung Sub Shinn

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)


PURPOSE: To correlate the findings of nonossifying fibroma at magnetic resonance (MR) imaging with those at pathologic examination. MATERIALS AND METHODS: In 19 patients (age range, 8-25 years; mean age 14 years) with pathologically proved nonossifying fibroma, MR images were analyzed for signal intensity and patterns of contrast enhancement. Findings at MR imaging and biopsy were correlated. RESULTS: On T1-weighted images, all nonossifying fibromas had low signal intensity compared with that of skeletal muscle. On T2-weighted images, 15 lesions (79%) were hypointense and four (21%) were hyperintense. On gadolinium-enhanced images, intense contrast enhancement was seen throughout 15 lesions (heterogeneous pattern in 12 and homogeneous in three) and in the margins and septa in four. Extensive hypercellular fibrous tissue and hemosiderin seen at pathologic examination were depicted with low signal intensity on T2-weighted MR images. CONCLUSION: The distinguishing features of nonossifying fibroma included hypointensity and septation on T2- weighted images. Signal intensity on T1- and T2-weighted MR images and the patterns of contrast enhancement were dependent on the amounts of hypercellular fibrous tissue, hemosiderin, hemorrhage, collagen, foamy histiocytes, and bone trabeculae.

Original languageEnglish
Pages (from-to)197-202
Number of pages6
Issue number1
Publication statusPublished - 1998 Oct

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging


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