Fraction of cases in which the thyroid gland had a third ('pyramidal') lobe

Value 18.3 %
Organism Human Homo sapiens
Reference Cicekcibasi AE, Salbacak A, Seker M, Ziylan T, Tuncer I, Buyukmumcu M. Developmental variations and clinical importance of the fetal thyroid gland. A morphometric study. Saudi Med J. 2007 Apr28(4):524-8. abstract, P.527 left column top paragraph & p.528 left columnPubMed ID17457471
Method Abstract: "This study performed in the Department of Anatomy, Meram Faculty of Medicine between February and April in 2002. Fetuses were obtained from the Gynecology Department of the Meram Faculty of Medicine, Selcuk University, and Dr. Faruk Sukan Maternity Hospital (Konya, Turkey). Sixty spontaneously aborted fetuses (30 boys and 30 girls) between the ages of 13.5th and 32.5th weeks, which had no detectable anomalies, were evaluated. The gland was dissected under the microscope. The location of the gland was determined according to the tracheal ring levels and laryngeal cartilage levels. The length, width and thickness of both lobes and isthmus of the gland were measured and then, the developmental anomalies were noted. The obtained data were statistically analyzed by Least Squares in variant analysis."
Comments Abstract: "The pyramidal lobe was observed in 18.3% of the cases." P.527 left column top paragraph: "The thyroid gland was in normal structure in 49 of all fetuses while, developmental anomalies were observed in the rest 11 thyroid gland. The pyramidal lobe was present in 18.3% (6 boys and 5 girls) of the cases (Figures 2a, 2b & 2c)."
Entered by Uri M
ID 113205