What are the characteristics of follicular thyroid carcinoma

What are the characteristics of thyroid follicular carcinoma, follicular thyroid cancer, thyroid cancer accounted for 10% -15% of the total, accounting for 20% of thyroid cancer, ranking No. 2. Visual inspection to see follicular carcinoma is a real envelope with the tumor , often densely coated with a rich vascular network, the smaller is very similar to cancer and thyroid adenoma.
Reddish-brown cut surface, often can be seen fibrosis, calcification haemorrhage and necrosis. Histologically, by different degrees of follicular differentiation of the composition. Were well differentiated, follicular structure, more typical, cell atypia are also smaller. At this time and not easy to distinguish adenoma, capsule or vascular invasion need to rely on to determine the pathological diagnosis.
What are the characteristics of follicular thyroid carcinoma, poorly differentiated follicular structures were less cellular atypia greater mitotic also common, can be cord-like solid were the nests. Sometimes piercing the capsule into the cancer cells formed in various vein tumor thrombus, distant metastases often become the starting point, so prevalent in the blood of follicular carcinoma metastasis, reported 19% -25%.
Follicular carcinoma more common in middle-aged women 40-60 years of age, clinical performance and papillary carcinoma are similar, the mass number of centimeters in diameter or larger, more solitary, a few can be multiple or bilateral disease, solid, hard and tough , ill. Less lymph node metastasis, multiple metastasis to the lung via the blood and bone.
What are the characteristics of follicular thyroid carcinoma, the general course of a long, slow growth, a small number of recent rapid growth, often the lack of obvious local malignant behavior. A small number of follicular carcinoma invasion and destruction of neighboring tissue, airway obstruction and other symptoms can occur.