<prompt> A patient with multinodular goitre suddenly developed pain and difficulty in breathing. Which of the following types of thyroid carcinoma is most likely to cause this complication ?Papillary carcinomaFollicular carcinomaMedullary carcinomaAnaplastic carcinoma  <response>: A painful nodule, sudden appearance, or rapid enlargement of a nodule raises suspicion of carcinoma usually follicular but is usually due to haemorrhage into a simple nodule Dominant or rapidly growing nodules in long-standing goitres should always be subjected to aspiration cytology. Source Bailey and Love 26th edition Pg : 748 