الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Our study was conducted on 998 apparently healthy subjects in Alexandria Main university hospitals. Female subjects were 543 (54.5%), while male subjects were 455 (45.6%).
The age in our study was ≤ 25 years old in 794 (79.6%) and ≥ 25 years old in 204 (20.4%) with a mean age of 24.15±4.60 years.
BMI was calculated and was normal (≤ 25kg/m2) in 62.5% (624) of the studied cases, while 38% (374) of the studied cases had BMI ≥ 25kg/m2. The mean BSA was 1.83±0.26.
The screening of the thyroid gland was performed on healthy subjects without previous history of any thyroid disease, autoimmune disease, liver or renal disorders.
Family history was obtained in details concerning any thyroid disorders, 844 (84.6%) cases had negative family history while 154 (15.4%) had positive family history of thyroid disorders.
The survey was done to detect any thyroid abnormalities whether by clinical examination or by using ultrasonography or both.
Clinical examination was conducted by the two examiners SNA and MEB and was double blinded performed, where they detected 92 and 86 abnormal clinical findings respectively.
The abnormal clinical findings were distributed as 52/92 cases of diffuse thyromegaly and 40 /92 cases as nodular disease, 10 cases were solitary and 30 cases were multiple.
The positive cases detected ultrasonography were 197 cases having different thyroid disease. (88/197 had abnormal clinical and ultrasonography findings while 109/197 had abnormal ultrasonography findings and were normal during clinical examination).
The mean total volume in female subjects was 10.72±4.99 mL while in males subjects was 11.78±6.21 mL.
Sixty eight cases were diagnosed as thyroid nodular disease which was more prevalent in females, (twenty five cases were diagnosed as single nodular disease and 43 were diagnosed as multiple nodular disease).
The total number of nodules was 175, where 103 nodules were missed during the clinical examination. Laboratory findings for the nodular cases were euthyroid in 55 cases, 13 cases showed subclinical hypothyroidism. The mean total volume in female subjects was 10.19±2.49 mL, while the mean total volume in male subjects was 13.89±5.06 mL.
Ultrasound thyroid was able to detect 91 cases of thyroiditis more prevalent in females. Laboratory findings of cases with thyroiditis were showing subclinical hypothyroidism in 39 cases, Thirty nine cases were euthyroid and 13 case were