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- Title
Diagnostic clue of nodular fasciitis mimicking metastasis in papillary thyroid cancer, mismatching findings on <sup>18</sup>F-FDG PET/CT and <sup>123</sup>I whole body scan: A case report.
- Authors
MINJUNG SEO; SEOL HOON PARK; MISUNG KIM; EUN SOOK KIM; HONGBO SIM; SUNGMIN JUN
- Abstract
This study reports a case of nodular fasciitis incidentally detected in a patient with papillary thyroid cancer. A 47-year-old woman underwent a total thyroidectomy and radioactive iodine therapy for papillary thyroid cancer. On a follow‑up fluorodeoxyglucose (18F‑FDG) PET/computed tomography (CT) scan after 12 months, a focal 18F‑FDG‑avid lesion was incidentally detected in the paraspinal muscle. It was well‑enhanced on CT and magnetic resonance imaging, indicating metastasis. However, the lesion was not iodine avid on the 123I whole body scan, which favored benign etiology over metastasis from thyroid cancer. For pathological confirmation, surgical excision was performed and the paraspinal lesion was finally confirmed as nodular fasciitis. Therefore, it was suggested that nodular fasciitis may be included in the differential diagnosis of a 18F‑FDG avid/iodine non‑avid soft tissue lesion in patients with thyroid cancer. In such circumstances, 123I whole body scans may serve a role in non‑invasive work‑up, and prevent unnecessary surgical procedures.
- Subjects
NODULAR fasciitis; FASCIAE diseases; FIBROMYALGIA; INFLAMMATION; THYROID cancer
- Publication
Oncology Letters, 2017, Vol 14, Issue 1, p1167
- ISSN
1792-1074
- Publication type
Article
- DOI
10.3892/ol.2017.6181