Separate thyrothymic thyroid remnant; clinically crucial anatomic variation

Annals of Surgical Treatment and Research
Emin Gurleyik, Gunay Gurleyik

Abstract

The anatomical variations of the thyroid gland including separate thyroidal remnant at the thyrothymic area are of significance during thyroid surgery for "total" thyroidectomy, and for recurrent goitre. In the present study, we aimed to detect the separate rests of thyroidal tissue in the thyrothymic region. The thyrothymic region was explored for identification, dissection, and excision of separate thyroidal remnants in 134 patients who underwent primary thyroid surgery. In this series, we studied the incidence and anatomical features of the thyrothymic remnant and its relation with other embryologic remnants. Overall, 222 sides of the thyroid were explored in this study. An entirely separate thyrothymic remnant of the thyroid was identified and excised in 8 of 134 patients (6%). Mean size of removed remnants was 36.4 mm (range, 29-45 mm) in diameter. The incidences of pyramidal lobe (PL) and Zuckerkandl's tubercle (ZT) were 71.6% and 59.7%, respectively. The thyrothymic remnant coexisted with PLs in 4 patients. Four patients had all 3 embryologic remnants: thyrothymic remnant, PLs, and ZTs. An entirely separate thyroidal remnant at the thyrothymic area is not a rare variation. The considerably large size of a remnant may thr...Continue Reading

References

Nov 20, 2002·Journal of the American College of Surgeons·Wend R SackettLeigh Delbridge
Sep 6, 2003·ANZ Journal of Surgery·Leigh Delbridge
Jun 22, 2005·The Annals of Otology, Rhinology, and Laryngology·Benjamin W Cilento, Neal Futran
Feb 20, 2007·World Journal of Surgery·Kylie L SnookLeigh Delbridge
Jan 31, 2012·The British Journal of Surgery·G VasicaL W Delbridge
Jan 23, 2013·International Journal of Surgery Case Reports·Alper SahbazYesim Erbil
Dec 20, 2014·Head & Neck·Patrick Sheahan, Fergal O'Duffy
May 17, 2015·BMJ Case Reports·Dhalapathy SadacharanShanmugasundaram Dinesh
Nov 18, 2017·Endocrine Practice : Official Journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists·Jamila A Benmoussa, Hassan Shawa

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