본 연구에서는 건강검진센터에서 임상적 증상 없이 갑상선 초음파를 시행 한 30대-70대 838명을 대상으로 갑상선 결절(thyroid nodule) 유무와 연령 및 성별에 의한 결절의 수, 결절의 크기, 결절의 발생 부위 등을 분석하여 다음과 같은 결론을 얻었다.
1. 연구 대상자 838명의 일반적 특성은 남자가 368명(44%), 여자가 470명(56%)이었으며 평균 연령은 51세 이었다.
2. 전체 대상자 838명 중 정상으로 진단된 경우는 590명(70%), 결절이 있는 유소견자는 248명(30%)으로 평균 30%의 갑상선 결절 유소견을 보였다.
3. 갑상선 결절의 연령대별 빈도는 30~40대 남자 10%~14%, 여자 20~29%, 50~60대 남자 27~33%, 여자 37~52%, 70대 남자 46%, 여자 50%로 나타났다.
4. 갑상선 결절 유소견자 248명을 단일성 결절(solitary nodule)과 다발성 결절(multiple nodule)로 구분한 결과 단일성은 125명으로 50.5%, 다발성은 49.5%를 보여 거의 같은 비율로 나타나고 있다.
5. 갑상선 결절의 크기는 모든 연령층에서 대부분 작은 크기의 결절을 가지고 있었으며 1~10㎜의 크기가 유소견자 248명 중 187명(75%)으로 가장 많았고 11~20㎜는 45명(18%), 21~30㎜는 14명(5.6%), 31㎜이상은 2명이었다.
6. 결절의 해부학적 발생부위는 우엽 93명(38%), 좌엽 67명(27%), 양엽 75명(30%), 협부 13명(5.3%)으로 나타나 우엽에 가장 많은 빈도를 보이고 있으며 협부에는 적게 발견되었다.

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This study obtained the following conclusions by analyzing whether or not thyroid nodule, the number of nodules depending on age and gender, and the developed site of nodule, targeting 838 persons in their 30s-70s who were conducted the thyroid ultrasonography, without clinical symptoms, at the Health Promotion Center.
1. As for the general characteristics of 838 research subjects, men were 368 persons(44%), and women were 470 persons (56%), and the mean age was 51.
2. Among 838 whole subjects, a case, which was diagnosed to be normal, was 590 persons(70%), and persons with nodules findings were 248 persons (30%), thus it was indicated 30% on an average in having the thyroid nodules findings.
3. As for the frequency by age level in thyroid nodule, it was represented men with 10%-14% and women with 20~29% in their 30~40s, and men with 27~33% and women with 37-52% in their 50-60s, and men with 46% and women with 50% in their 70s.
4. As a result of obtaining 248 persons, who have thyroid nodules findings, with the solitary nodule and the multiple nodule, it was indicated the solitary nodule of 50.5% with 125 persons and the multiple nodule of 49.5%, thereby representing the almost same ratio.
5. As for the size of thyroid nodule, the majority in all the age levels had the nodule in small size, and the size of 1~10㎜ was largest with 187 persons (75%) among 248 persons with abnormal findings, and it was 45 persons (18%) in 11~20㎜, 14 persons (5.6%) in 21~30㎜, and 2 persons in more than 31㎜.
6. As for the anatomically developed site in nodule, it was indicated the right lobe with 93 persons (38%), the left lobe with 67 persons (27%), both lobes with 75 persons (30%), and isthmus with 13 persons (5.3%), thereby representing the largest frequency in the right lobe, and it was discovered less in isthmus.

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