PMC7293128_01
Metastatic macrofollicular thyroid carcinoma to femur. a CT showed the presence of a tumor involving right thyroid lobe with central necrosis that displaced the upper third of the trachea and the vascular structures on the right side of the neck; b and c MRI showed a destructive neoplasm in the diaphysis and epiphysis of the femur; d The neoplasm showed large follicles in more than 50% of the neoplastic follicles; e Immersed in the metastasis of macrofollicular variant papillary thryroid carcinoma, a bone spicule was observed (*); f Follicles were lined by atypical nuclei and some showed pseudoinclusions
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Fig1
In April 2019, a computed tomography (CT) of the neck was performed that confirmed the presence of a tumor involving the right thyroid lobe with central necrosis that displaced the upper third of the trachea and vascular structures on the right side of the neck with high level of peripheral reinforcement in the sequence with contrast medium (Fig. 1a). In August 2019, total thyroidectomy was performed. A magnetic resonance imaging (MRI) of the knee confirmed the presence of a destructive tumor in the diaphysis and epiphysis of the femur, which measured 82x54x52 mm, involving the articular medial intercondylar component and the posterior cruciate ligament (Fig. 1b and c).