LAUSR

89 total thyroidectomy with removal of surrounding lymph nodes, followed by radioactive iodine abla‐ tion and external beam radiotherapy to the neck. After 10 years, the patient underwent a resec‐ tion of the apical segment of the right lung due to metastasis. Positron emission tomography– computed tomography performed at the begin‐ ning of 2020 showed high concentrations of flu‐ orodeoxyglucose in the left ventricular wall and right gluteal muscles. Magnetic resonance im‐ aging (MRI) confirmed the presence of a tumor (40 × 36 × 19 mm) invading the left ventricle (Figure 1A and 1B). The woman remained oligosymp‐ tomatic. Upon excision via sternotomy, a 60 g mass spreading in the lateral and apical walls of the left ventricle, approximately 30 mm laterally to the anterior descending artery, was removed (Figure 1C and 1D). Hemostasis of the surrounding Thyroid cancer constitutes 1% to 5% of all malig‐ nancies worldwide and its incidence is expected to increase. Follicular thyroid cancer is the sec‐ ond most common type of thyroid cancer, repre‐ senting approximately 10% of all malignant thy‐ roid tumors in iodine ‐sufficient areas.1 Metasta‐ sis of epithelial thyroid cancer cells to the myo‐ cardium is an extremely rare but potentially se‐ vere complication.2 We describe a case of a 57‐year ‐old woman with poorly differentiated metastatic follicu‐ lar thyroid cancer, who was admitted to our de‐ partment in June 2020 for surgical removal of a mass infiltrating the left ventricular wall. She was diagnosed with cancer (morphological code 8020/3 according to the World Health Organiza‐ tion histological classification; with a follicular appearance) 12 years earlier. Treatment included