Fig. 4From: Thyroid primary and metastatic malignant tumours of poor prognosis may mimic subacute thyroiditis - time to change the diagnostic criteria: case reports and a review of the literatureA large tumour of the thyroid, US pattern not typical for SAT; in the large hypoechoic mass the large abscess was visible; additionally, muscle infiltration and intra-tumour calcifications were clearly seen in the USBack to article page