A 62-year-old female with a prior history of breast cancer was presented with a recurrent episode of dermatomyositis. Her original episode of dermatomyositis was treated with prednisone and hydroxychloroquine. After she received chemotherapy for the treatment of the breast cancer, the rash subsided. The patient even had bone marrow, which was negative for any metastatic disease. The patient had a PET scan, which showed an uptake in a thyroid nodule.
Hence, the patient had a thyroid ultrasound, which showed a dominant vascular nodule within the isthmus measuring 1.5 x 1.3 cm with punctate calcifications. There was an adjacent smaller hypoechoic nodule measuring 1.1 cm. The patient was subsequently referred to an endocrinologist. On detailed history and exam, the patient was noted to have dysphagia and dyspnea as the key positive findings. What is the most likely diagnosis from this…
