Labels:text | screenshot | black | black and white OCR: indicated During the past decade, case reports hav ullary the existence of mixed follicular and me carcinomas: in one instance, positive immunostaining occurred with both he same antithyroglobulin and anticalcitonin in mixed tumour cells. The identification of these ar thyroid tumours has suggested that some follicu e into a cells may have the capacity to differentia me cells ofC-cell phenotype or, alternatively, that s to express ultimobranchial origin may differentiate a follicular phenotype.