Low-grade fibromyxoid sarcoma: ultrasound and magnetic resonance findings in two cases.
Low-grade fibromyxoid sarcoma is a rare, slow-growing, yet metastasizing neoplasm characterized by histopathological fibrous/myxoid zonal alternations, which occasionally display an intralesional multinodular appearance. We report on the radiological features of two cases of low-grade fibromyxoid sarcoma. Case 1 was a large ovoid mass with a well-defined margin in the thigh, showing the characteristic multiple, intralesional variable-sized nodules on high-frequency ultrasound (US) and magnetic resonance imaging (MRI), some of the nodules showing a target-like appearance. Case 2 was a dumbbell-shaped chest wall mass showing invasive features without the intralesional multinodular appearance on MRI. The gross radiological appearances of our two cases were somewhat dissimilar, but they shared a pattern of low/high signal zonal distinction without hemorrhage or necrosis within the masses on MRI.
Koh
Sung Hye
SH
Department of Radiology, Hallym University Sacred Heart Hospital, 896 Pyungchon-dong, 431-070, Anyang, Kyungki-do, Korea. cleme@dreamwiz.com
Choe
Hyung Sim
HS
Lee
In Jae
IJ
Park
Hye Rim
HR
Bae
Sang Hoon
SH
D000328:Adult; D005350:Fibroma / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D005354:Fibrosarcoma / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011859:Radiography; D012983:Soft Tissue Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D013848:Thigh / Q000000981:diagnostic imaging / Q000473:pathology; D035441:Thoracic Wall / Q000000981:diagnostic imaging / Q000473:pathology; D014463:Ultrasonography