Tracheal nodularity and paratracheal soft tissue nodule: post-radioactive iodine treatment changes with peculiar visual and pathologic findings in a case of metastatic follicular variant papillary thyroid carcinoma: a case report.

Background: Follicular variant papillary thyroid carcinoma is a distinct subtype of papillary thyroid carcinoma that can occasionally present with aggressive features, including distant metastases and extrathyroidal extension. While radioactive iodine ablation is a well-established treatment for residual disease, its post-treatment effects on tracheal and paratracheal structures remain poorly characterized.

Case Presentation: A 22-year-old male individual of Taiwanese descent presented with an enlarged neck mass and was diagnosed with follicular variant papillary thyroid carcinoma.