Evaluation of the importance of pyramidal lobe of thyroid gland anatomically in the surgical fields in Erbil
AbstractBackground and Objectives: Dealing with the pyramidal lobe of the thyroid gland was not principally and cautiously under run in the surgery of the thyroid gland as the other two lat-eral lobes formerly. For this reason, the present work planned to study the anatomy and histopathology of the pyramidal lobe and to evaluate the degree their significance in surgi-cal fields. Methods: The study included patients' preparation for operation, recording age, gender distributions, and measurement of pyramidal lobe moreover to view of directions. Blood supply and histopathology of the pyramidal lobe investigated during thyroid operations of 113 patients in Rizgary teaching hospital in Erbil. Results: Goiter patient's sex distributions were as the following; 94 (83%) female and 19 (17%) male. PL frequency was 61/ 113 case (74%); 50 (82%) females and 11(18%) males. pyramidal lobe directions were 21 directed right, in 40 cases to left. Arterial supplies of 34 cases were from a branch of the superior thyroid artery, in 27 cases were from isthmus. Venous drainage was joining venous plexus of the thyroid isthmus. Age distribution; fe-males were commonly affected at (25 to 45y). Males were (28-62y). Pyramidal lobe mean length was (3.2+ 1.8cm) and the width (1.6+ 0.7cm). Histopathologically; pyramidal lobe involved by principal thyroid lobes pathologies in 43 (71%) of the patients. Conclusions: This study alert us that the pyramidal lobe mustbe managed as a principal lobe during operations, because It may be a source of pitfall during the operation or it may be a future source of mucinous carcinoma of thyroid.
Mark Hill Endocrine Development – Thyroid. UNSW Cricos-Embryology. Thyroid development overview ch:3-P92 2008.
- Hegedus L, Perrid H, Poulsen R et al ) The de-termination of thyroid gland volume by ultrasound and its relationship to body weight, age, and sex in normal subjects. J Clin Endocrinol Metab 1983: 5: 260
Dominique Dorion, David Lemaire,& Terris, MD) e-Medicine specialitties,otolarygiology,anatomy of thyroid.Medline-(2008) .
Braun EM,Windisch G,Wolf G.Hausleitner LAnder-huber F. The pyramidal lobe: clinical anatomy and its importance in thyroid surgery. Institute of Anatomy, Medical University Graz, 2007 Harrachgasse 21, Graz, 8010, Austria.
Cicekcibasi AE, Salbacak A, Seker M, Ziylan T, Tuncer I, Buyukmumcu M.. Developmental varia-tions and clinical importance of the fetal thyroid gland. A morphometric study. Saudi Med J. 2007:Apr;28(4):524-8.
Sultana SZ, Mannan S, Ahmed MS, Rahman MM, Khan MK, Khalil M. Seheli Sultana . An anatomi-cal study on pyramidal lobe of thyroid gland in Bangladeshi people. Mymensingh Med J. 2008 Jan;17(1):8-13.
Blumberg NA. Observations on the pyramidal lobe of the thyroid gland. S Afr Med J . 1981:Jun 20;59(26):949-50.
Siraj QH, Aleem N, Inam-Ur-Rehman A, Qaisar S, Ahmad M.. The pyramidal lobe: a scintigraphic assessment. Nucl Med Commun. 1989 Sep;10(9):685-93.
Harjeet A, Sahni D, Jit I, Aggarwal AK. Shape, measurements and weight of the thyroid gland in northwest Indians. Surg Radiol Anat. 2004:Apr;26(2):91-5.
Cicekcibasi AE, Salbacak A, Saudi Med J.Developmental variations and clinical impor-tance of the fetal thyroid gland. A morphometric study. Saudi Med J. 2007:Apr;28(4):524-8.
Kitagawa W. Arterial supply of the thyroid gland in the human fetuses . Nippon ika Diagaku Zasshi (1993) Jun;60(3):140-55.
Keith L. Moore and Arthure F.Daddly Thyroid, Clinically Oriented anatomy :fourth edition; 1999- 1030-1038;Lippincott Williams Wil-kins,Philadephia.
Osamu Ozaki, Kunihiko Ito, Kiminori Sugino, Kentaro Yasuda, Tomoyuki Yamashita and Koji Toshima. Solid cell nests of the thyroid gland: Precursor of mucoepidermoid carcinoma?. world journal of surgery. 1992 Vol 16,Number 4/July.Springer New York.Medicine, August, 2005.
-H.George Burkitt, Glive R.G. Quick and Dennis Gatt, Disorder of the thyroid and parathyroid glands 2000:31:597-615:Essential surgery.ement.
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