Authors studied 186 cases of thyroid nodule operated at department of general surgery, Maryknoll Hospital, from jan, 1989 to Dec. 1993.
@ES The results were analyzed and summarized as follows:
@EN 1) Among the 186 cases of the thyroid nodules, the incidence of malignancy was 25.3%.
2) Female patients were predominate in 10 times than males. The peak incidence was 5th decade in benign nodules(27.3%), and over 60 years in malignant nodules(25.5%).
3) The most comon benign nodule was follicular adenoma(77%), and the most common malignant nodule was papillary adenocarcinoma(80.9%).
4) Solitary nodule was 76.3% in benign nodules, and 93.6% in malignant nodules. Both benign (46%) and malignant nodules(48.9%) were more prevalent on right lobe.
5) On the radiorsotope scanning the incidence of malignant nodule with cold nodule was 25%, and all hot nodules were benign.
6) In thyroid function test, all patients were within normal limit except 4 cases of benign nodules(one hypofunctioning, three hyperfunctioning) and one malignant nodule.
7) Most cases of benign nodules were treated with lobectoy(21.6%), or lobectomy with isthmectomy(69.8%). Malignant nodules were treated with lobectomy with isthmectomy(36.2%), subtotal thyroidectomy(27.7%), total thyroidectomy(17%), total
thyroidectomy
with modified neck dissection(8.5%).
8) In frozed section diagnosis, false negative rate was 7.9% and false positive rate was 3.8%.
9) Most common postoperative complication was seroma(3.6%) in benign nodules and transient hoarseness(10.6%) in malignant nodules. Post opertive complication occured more commonly in malignant nodules(25.5%) than benigh(6.5%).
10) In malignant nodules, 3 cases were recurred and 2 cases were expired during mean followup of 47 month.
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