Classification and Clinical Manifestations of Thyroid Cancer

1.Papillary Thyroid Cancer

Papillary thyroid cancer is the most common thyroid cancer, accounting for about 70%-80% of all thyroid cancer. It belongs to the low grade malignant tumor, and is more common in young women, the ratio of men and women is l:2.7, and the amount of patients is significantly increased after 20 years of age, and age of 30 to 40 is most common, and issignificantly decreased after 50 years of age. It begins in follicular cells and usually grows slowly and generally is single, a small number of multiple, the smallest size can be a few millimeters, prone to cervical lymph node metastasis, but also can be transferred to the blood line to the lung and bone. If diagnosed early, most people with papillary thyroid cancer can reach remission.

2. Follicular Thyroid Carcer

Follicular Thyroid Carcer is the second most common type whose incidence rate is about 10-15% of all thyroid cancers, and is more common in the elderly, rapid morbidity and can occur systemic metastasis early, it is generally believed that more benign tumors or low malignant tumors.

Clinical manifestations: a history of long-term thyroid enlargement, rapid increase in the near future, and produce local compression symptoms, such as breathing difficulties, dysphagia, neck vein anger, voice hoarse and so on, is due to tumor oppression trachea, esophagus, jugular vein and recurrent laryngeal nerve. Pain in the neck, hard, fixed, unclear boundary. Same like papillary thyroid cancer, if diagnosed early, most people with follicular thyroid cancer can reach remission.

3. Medullary Thyroid Cancer

Also known as follicular cell carcinoma, a malignant tumor that occurs in the follicular cells of the thyroid gland. It is rare in clinic, and it is about 3.4% of all thyroid cancers. The onset of this disease is sporadic, but a few are familial. In the middle grade of malignant tumor, lymphatic metastasis occurred earlier, and can be transferred to the lung. Medullary thyroid cancer tends to grow slowly.

Clinical manifestations: come with isolated nodules usually, Familial medullary carcinoma is a bilateral disease. The nodules may have mild tenderness. Usuall grows slow, some also grow rapidly and causes death in a short term. Tumor may invade the surrounding tissues, the corresponding oppression and obstruction of the symptoms, such as breathing difficulties, voice hoarse, etc..

4. Anaplastic Thyroid Cancer

Very rare, the incidence rate is about 1-3% of all thyroid cancers, is common in old people more than 60. The cancer begins in follicular cells of the thyroid and the cancer cells tend to grow and spread very quickly. Anaplastic thyroid cancer is very difficult to control.

Clinical manifestations: often with the medical history of thyroid enlargement, solidity is hard, after rapid tumor growth, oppression or invasion and the organization of the week, come with difficulty breathing, swallowing difficulties, voice hoarse, etc., often causes patients death in several days after treatment.

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