Anaplastic thyroid carcinoma is one of the most aggressive malignancies with poor prognosis. 甲状腺分化不良癌是极恶性的癌症，预后极差。
Arising centrally in this lung and spreading extensively is a small cell anaplastic carcinoma. 中央型小细胞癌向周围蔓延。
We present a case of anaplastic transformation of metastatic papillary thyroid carcinoma in the lungs. 我们报道一例肺部转移性甲状腺乳头状癌的间变性转化。
This is the microscopic pattern of a small cell anaplastic carcinoma in which small dark blue cells with minimal cytoplasm are packed together in sheets. 小细胞癌细胞呈暗蓝色，挤压后聚集成片状，细胞质少。