Imaging anatomy and clinical significance of the pyramidal lobe of thyroid gland
SU Ying-Rui, CHA Jin-Shun, LI Jie-Lin, HUANG Jing-Shan, WANG Yao-Guo, QIN Guang-Meng, LI Zheng-Yi
Chinese Journal of Clinical Anatomy ›› 2012, Vol. 30 ›› Issue (6) : 651-654.
Imaging anatomy and clinical significance of the pyramidal lobe of thyroid gland
Objective To study the feasibility of imaging technology on exploring the shape and position of pyramidal lobe of thyroid，and its clinical significance. Methods We reviewed and analyzed the data of sonograms and scintigraphic images in 510 cases accepted thyroid operation, especially anatomic features of pyramidal lobe and accessory glands. 1500 volunteers were performed thyroid ultrasound, 120 of them received scintillation scanning. Scintigraphic images and sonograms were analyzed to evaluate the frequency, location and expansion of the pyramidal lobe. Results Scintigraphic analysis showed pyramidal lobe in 56 cases, 5 cases with accessory glands. 210 cases were found pyramidal lobe during the operation, 208 of them were identified under ultrasound. No difference appeared between ultrasound and intraoperative observation for size of pyramidal lobe. 35 cases with pyramidal lobe and 5 with accessory thyroid presented in scintigraphic detection in 120 volunteers. 285 pyramidal lobes originated from the left side of the isthmus, 233 lobes from the right of the isthmus, 112 from the middle part of the isthmus, and only two from the left lobe. Conclusions These observations support that, ultrasound and scintigraphy could demonstrate pyramidal lobe and ectopia glands, which is valuable for the accurate thyroidectomy．
Thyroid gland / Pyramidal lobe / Applied anatomy / Ultrasound / Scintigraphy
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