25th August 2020

A 51-year-old man presents with a swollen anterior neck, he also feels hot and has been experiencing palpitations

A 51-year-old man presents with a swollen anterior neck, he also feels hot and has been experiencing palpitations. He has had a recent cough and cold, but after a few days respite these new symptoms developed. On examination the patient has a diffuse goitre that is tender upon palpation. Blood tests reveal the patient is biochemically thyrotoxic and there is a raised erythrocyte sedimentation rate. 

For the patient above, please select the SINGLE most likely underlying diagnosis. Select ONE option from the list above.