Abstract：
:Nodular fasciitis (NF) is a benign reactive lesion of the soft tissues related to the fascia and characterized by fibroblastic proliferation. The most common site is the upper extremities (46%), followed by the head and neck region (20%). In the orofacial region, the lesion typically develops within the subcutaneous structures overlying the angle and inferior border of the mandible and the zygoma. Magnetic resonance imaging (MRI) findings of NF in the orofacial region are almost unreported in the literature. In the present case report, we describe MRI findings of mental NF in a 19-year-old woman. MRI revealed a well-defined, round soft-tissue mass lying on the mentum. On T1-weighted MRI, the lesion was isointense to skeletal muscle; it was hyperintense to skeletal muscle on T2-weighted MRI, and was enhanced by Gd-diethylenetriamine pentaacetic acid (DTPA). Histologic examination revealed abundant myxoid degeneration dispersed in the lesion. The T2-weighted higher heterogeneous signal intensity was likely due to abundant myxoid degeneration or the cellular component of the lesion. A strong bright signal intensity belt appeared in the periphery of the lesion on Gd-DTPA enhancement. This rim enhancement appeared to represent small arterioles and venules that were visible in the peripheral area on histologic examination.
journal_name
Odontologyjournal_title
Odontologyauthors
Katada T,Tsuchimochi M,Oda T,Sasaki Y,Toyama M,Katagiri Mdoi
10.1007/s10266-004-0042-5subject
Has Abstractpub_date
2004-09-01 00:00:00pages
77-80issue
1eissn
1618-1247issn
1618-1255journal_volume
92pub_type
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