A biopsy of the thyroid gland
To determine the status of thyroid cells and knots formed therein prostate biopsy: a needle withdrawn therefrom for the analysis of cellular material. The procedure is called a fine-needle biopsy of the thyroid gland or a needle biopsy of the thyroid gland and it is considered to be the main method of diagnosis of thyroid cancer. The biopsy gives an opportunity to put the final diagnosis - already after the doctor will tactile examination and ultrasound, will bring together the history, examine the existing risk factors may have influenced the appearance of tumors.
Shown biopsy in all patients. Research subject only nodes with indirect signs of malignancy, the nodes that are larger than 1 cm, special attention is paid to single nodes.
How is a biopsy of the thyroid gland
The procedure does not require special training, conduct it without anesthesia. Conduct anesthesia is considered inappropriate because the drug can mix with the cell material, and therefore, affect the final result of a biopsy of the thyroid gland. In addition, pain management will need to make a shot, which pain is no different from the puncture and, therefore, does not make sense. Patients for whom it is psychologically difficult to move such a procedure, it is recommended to take a sedative eve.
Patient during a biopsy of the thyroid gland must be in the supine position and tilt the head back. To obtain a sufficient amount of cellular material usually 2-3 doctor makes one puncture site. The puncture site is pretreated with alcohol. The resulting material was caught in the lumen of the needle was placed on the glass and transmitted on histology.
During the injection can not swallow because the needle can move and analysis will be taken the wrong stuff.
Carry out fine needle biopsy of the thyroid gland under the control of ultrasound machine, it increases the probability of collection of material from the affected site. Since the procedure is simple, it can be carried out in an outpatient setting, it lasts no more than an hour.
After the biopsy of the thyroid gland even for two, three days it may feel soreness at the puncture site. Slight bleeding may occur in the event that the needle falls into the container.
There are also cases when, during a puncture in the Isthmus doctor punctured trachea. In this case, the patient starts coughing, so you should immediately remove the needle, and to postpone the procedure. Patients with osteochondrosis of the cervical vertigo may feel briefly after the biopsy, insert sharply after the procedure they can not.
Evaluation of the results of the biopsy of the thyroid gland
Cytology obtained material lasts for 3-7 days. Overall accuracy for nodal disease is about 95%. Deviations from 100% due largely to the qualification of the personnel conducting the procedure directly with a feature of the method: the highest percentage of non-informative and misdiagnosis accounts for units of small size - up to 1 cm.
Benign biopsy results of the thyroid gland is considered the wording "nodular goiter" and its different variations. Benign biopsy with this result is 98%.
As benign and can be treated such findings (95%) as a "colloidal", "blood", "cell group / cell follicular epithelium."
The probability of malignancy is 50% under these conclusions: "difficulties in differentiating adenoma and carcinoma", "unit with symptoms of atypia and proliferation of the follicular epithelium." Such formulations are treated as "follicular neoplasia".
If the wording "medullary carcinoma / cancer / carcinoma elements / papillary thyroid carcinoma," "suspected carcinoma", "malignancy can not be excluded" - the probability of malignancy is 100%, 90% and 70%, respectively.