| الوصف: |
Aim of this study was to determine morphologic development, localization and artery and nerve relationships of the thyroid gland using anatomic dissection method during the fetal period. 200 fetuses aged between 9-40 weeks of gestation with no external anomaly or pathology were used in this study. At first, skin, subcutaneous tissue, fascia, and muscles of the anterior neck were dissected, and thyroid gland was exposed. Second, orijin of the superior and the inferior thyroid artery were determined, and morphometric parameters of the arteries were measured. The relationship between inferior thyroid artery and recurrent laryngeal nerve and the levels of the thyroid gland according to vertebra and cartilage of the larynx were determined. Finally the dimensions (length, width, and thickness) of the thyroid gland were measured. Mean values and standard deviations of parameters according to gestational weeks, months and trimesters were calculated. It is determined that all parameters were increasing with gestational age (p<0.05). No significant differences were observed between sexes for any of the parameters (p>0.05). The relationships between inferior thyroid artery and recurrent laryngeal nerve were described as seven different types. It is observed that levels of the thyroid gland were decreasing according to vertebra and cartilage of the larynx during the fetal period. We think that data obtained in this study can be used confidently in radiological examinations of the thyroid gland during the intrauterine period. Data will also contribute to the future studies in the field of obstetri, perinatology and fetopathology. Keywords: Human Fetus, Recurrent Laryngeal Nerve, Thyroid Gland, ThyroidArteries. ; Tez (Doktora)- Süleyman Demirel Üniversitesi Sağlık Bilimleri Enstitüsü Anatomi Anabilim Dalı, 2011. ; Kaynakça var. ; Aim of this study was to determine morphologic development, localization and artery and nerve relationships of the thyroid gland using anatomic dissection method during the fetal period. 200 ... |