Agenesis of isthmus of thyroid gland in adult human cadavers: a case series

Cases Journal - Tập 2 - Trang 1-4 - 2009
Daksha Dixit1, MB Shilpa1, MP Harsh1, MV Ravishankar1
1Department of Anatomy, KLE University's Jawaharlal Nehru Medical College, Belgaum, India

Tóm tắt

The thyroid gland, a highly vascular endocrine gland, is composed of two lateral lobes connected by a narrow median isthmus thus giving an 'H' shaped appearance to the gland. A wide range of morphological variations and developmental anomalies of the thyroid gland have been reported in the literature. In our study, on the morphometric features of the thyroid gland it was found that, 6 out of 41 thyroid glands that were dissected, showed an absence of the isthmus. The respective lateral lobes were positioned independently on either side of the trachea. The incidence of agenesis of isthmus, along with the developmental and clinical significance are discussed herein under.

Tài liệu tham khảo

Standring S, Herold E, Healy JC, Johnson D, Williams A: Gray's Anatomy. 2005, Elsevier Churchill Livingstone, 560-564. 39

Larochelle D, Arcand P, Belzile M, Gagnon N-B: Ectopic thyroid tissue - a review of the literature. J Otolaryngol. 1979, 8: 523-530.

Pastor VJF, Gil VJA, De Paz Fernández FJ, Cachorro MB: Agenesis of the thyroid isthmus. Eur J Anat. 2006, 10: 83-84.

Marshall CF: Variations in the form of the thyroid gland in man. J Anat Physiol. 1895, 29: 234-239.

Ranade AV, Rai R, Pai MM, Nayak SR, Prakash , Krishnamurthy A, Narayana S: Anatomical variation of the thyroid gland: possible surgical implications. Singapore Med J. 2008, 49: 831-4.

Testut L, Latarjet A: 1978, Salvat Editores, Tomo IV: 9

Braun E, Windisch G, Wolf G, Hausleitner L, Anderhuber F: The pyramidal lobe: clinical anatomy and its importance in thyroid surgery. Surg Radiol Anat. 2007, 29: 21-27. 10.1007/s00276-006-0165-1.

Won HS, Chung IH: Morphologic variations of the thyroid gland in Korean adults. Korean J Phys Antropol. 2002, 15: 119-125.

Harjeet A, Sahni D, Jit I, Aggarwal AK: Shape, measurements and weight of the thyroid gland in northwest Indians. Surg Radiol Anat. 2004, 26: 91-95. 10.1007/s00276-003-0194-y.

Le Douarin N, Fontaine J, Lee Lievre C: New studies on the neural crest origin of the avian ultimobranchial glandular cells interspecific combinations and cytochemical characterization of C cells based on the uptake of biogenic amine precursors. Histochemistry. 1974, 38: 297-305. 10.1007/BF00496718.

Sgalitzer KE: Contribution to the study of the morphogenesis of the thyroid gland. J Anat. 1941, 389-405.

Duh QY, Ciulla TA, Clark OH: Primary parathyroid hyperplasia associated with thyroid hemiagenesis and agenesis of the isthmus. Surgery. 1994, 115: 257-263.

Schanaider A, de Oliveira PJ: Thyroid isthmus agenesis associated with solitary nodule: A case report. Cases J. 2008, 1: 211-10.1186/1757-1626-1-211.

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