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Normal radiological anatomy of thyroid cartilage in 600 Chinese individuals: implications for anterior cervical spine surgery Thyroid cartilage is an important barrier in anterior cervical approach surgery. The objective of this study is to establish normative values for thyroid cartilage at three planes and to determine their significance on preoperative positioning and intraoperative traction in surgery via the anterior cervical approach.Neck CT scans were collected from 600 healthy adults (...) who did not meet any of the exclusion criteria. Transverse diameters (D1, D2, and D3) of the superior border of the thyroid cartilage (SBTC), inferior border of the thyroid cartilage (IBTC), and the trachea transverse diameters of the inferior border of the cricoid cartilage (IBCC) were measured on a horizontal plane.All measured variables had intra-class correlation coefficients (ICCs) of ≥ 0.7. The differences in transverse diameters on the same plane between males and females were significantly
Parathyroid, Thyroid and Recurrent Laryngeal Nerve Anatomy in an Indian Rhinoceros (Rhinoceros unicornis). The parathyroid gland was first identified in the Indian rhinoceros in 1849 by Sir Richard Owen. We performed a necropsy in an Indian rhinoceros, recapitulating Owen's dissection and display what appear to be the initial identification of the recurrent laryngeal nerve in situ and the anatomy and histology of the largest rhinoceros parathyroid glands yet identified.Patrick T. Rhino, a 41 (...) structures were photographed in situ and biopsied. The thyroid was identified deep to the strap muscles, received its blood supply from the inferior and superior thyroid arteries and was blue in color. The right recurrent laryngeal nerve, identified and photographed in situ for the first time in the rhinoceros, was deep to the inferior thyroid artery and was traced throughout its cervical course. Single parathyroid glands identified on the lateral thyroid lobes received their blood supply from
thyroid uptake (60–62). Focal thyroid uptake most often corresponds to a clinically relevant thyroid nodule, and US examination is thus rec- ommended to de?ne thyroidanatomy. Importantly, focal 18 FDG-PET uptake increases malignancy risk in an affected nodule, and therefore clinical evaluation and FNA of nodules ‡1 cm is recommended. 18 FDG-PET positive thyroid nodules 25%–50% cystic component) (64) or sampling error (dif?cult to palpate or posteriorly located nodules), US-guided FNA is preferred (...) 2015 American Thyroid Association Management Guidelines for Adult Patients with Thyroid Nodules and Differentiated Thyroid Cancer SPECIAL ARTICLE 2015 American Thyroid Association Management Guidelines for Adult Patients with Thyroid Nodules and Differentiated Thyroid Cancer The American Thyroid Association Guidelines Task Force on Thyroid Nodules and Differentiated Thyroid Cancer Bryan R. Haugen, 1, * Erik K. Alexander, 2 Keith C. Bible, 3 Gerard M. Doherty, 4 Susan J. Mandel, 5 Yuri E
Anatomy of the Cervicomental Region: Insights From an Anatomy Laboratory and Roundtable Discussion. In 2015, ATX-101 (deoxycholic acid injection; Kybella in the United States and Belkyra in Canada; Kythera Biopharmaceuticals, Inc., Westlake Village, CA [an affiliate of Allergan plc, Dublin, Ireland]) was approved as a first-in-class injectable drug for reduction of submental fat. Use of a pharmacologic/injectable therapy within the submental region requires a thorough understanding (...) of cervicomental anatomy to ensure proper injection technique and safe administration. To this end, an anatomy laboratory was conducted to review key external landmarks and important internal anatomic structures that characterize the lower face and anterior neck. External landmarks that define the boundaries of the cervicomental and submental regions were identified including the inferior mandibular border, the anterior border of the sternocleidomastoid muscle, the antegonial notch, the submental crease
Anterior cervical pain syndrome: Risk factors, variations in hyolaryngeal anatomy, and treatments. Anterior cervical pain syndromes (ACPS) are a poorly understood entity associated with lateral neck discomfort when talking, chewing, or yawning, and with occasional excruciating pain and dysphagia. This investigation aims to describe patients with ACPS presenting symptoms and treatments.Retrospective chart review of all patients with ACPS presenting to a tertiary care laryngology practice in 1 (...) aspect of the hyoid or superior cornu of the thyroid cartilage (89%). Pain triggers included speaking (67%), head turn (56%), chewing (44%), yawning (56%), and swallowing (56%). On CT imaging, eight of nine patients had abnormalities of the hyoid bone or the superior cornu of the thyroid cartilage, correlating 100% with point tenderness location. Treatments include physical therapy (33%), steroid injection (44%), lidocaine injection (22%), and surgical intervention (56%).ACPS is a frustrating
Cricothyroid joint anatomy as a predicting factor for success of cricoid-thyroid approximation in transwomen. Cricoid-thyroid approximation (CTA) performed to elevate the vocal pitch in transwomen fails in about one-third of the patients. The purpose of this study was to test the feasibility of predicting the likelihood of success of CTA by preoperative determination of the crico-thyroid joint (CTJ) type using three-dimensional (3-D) images derived from high-resolution computer tomography (HRCT (...) ).Prospective cohort study of 18 transwomen who underwent CTA at our institution.All patients had a preoperative and a postoperative HRCT of the larynx, as well as pre- and postoperative measurements of the fundamental vocal pitch (F0 ).Three-dimensional images showed type A CTJs in 11 patients and type B or C CTJs in seven patients (see below for the definition of these types). Cricoid-thyroid approximation raised the F0 on average by 76 Hz in patients with type A CTJs and by 45 Hz in patients with type B
Ultrasonography-Based Thyroidal and Perithyroidal Anatomy and Its Clinical Significance Ultrasonography (US)-guided procedures such as ethanol ablation, radiofrequency ablation, laser ablation, selective nerve block, and core needle biopsy have been widely applied in the diagnosis and management of thyroid and neck lesions. For a safe and effective US-guided procedure, knowledge of neck anatomy, particularly that of the nerves, vessels, and other critical structures, is essential. However, most (...) previous reports evaluated neck anatomy based on cadavers, computed tomography, or magnetic resonance imaging rather than US. Therefore, the aim of this article was to elucidate US-based thyroidal and perithyroidal anatomy, as well as its clinical significance in the use of prevention techniques for complications during the US-guided procedures. Knowledge of these areas may be helpful for maximizing the efficacy and minimizing the complications of US-guided procedures for the thyroid and other neck
Salient Anatomical Landmarks of Thyroid and Their Practical Significance in Thyroid Surgery: a Pictorial Review of Thyroid Surgical Anatomy (Revisited) Thyroid surgery is a prototype of operations requiring thorough knowledge of surgical anatomy. There are many vital and delicate anatomical structures such as recurrent laryngeal nerve, superior laryngeal nerve, parathyroid glands, and distinct fascial planes surrounding the thyroid gland. A protean range of pathologies such as goiter, nodules (...) in the surgical management of thyroid disorders. Surgeons attempting thyroidectomy need to have thorough knowledge of embryology and surgical anatomy of the thyroid gland. In this context, we highlight through a pictorial assay the embryological and anatomical aspects of the thyroid gland emphasizing on their clinical and surgical importance.
ThyroidAnatomyThyroidAnatomy: Overview, Structure, Fascia and Ligament Edition: No Results No Results Please confirm that you would like to log out of Medscape. If you log out, you will be required to enter your username and password the next time you visit. https://profreg.medscape.com/px/getpracticeprofile.do?method=getProfessionalProfile&urlCache=aHR0cHM6Ly9yZWZlcmVuY2UubWVkc2NhcGUuY29tL2FydGljbGUvODM1NTM1LW92ZXJ2aWV3 processing > ThyroidAnatomy Updated: Nov 30, 2017 Author: Dominique (...) Dorion, MD, MSc, FRCSC, FACS; Chief Editor: Arlen D Meyers, MD, MBA Share Email Print Feedback Close Sections Sections ThyroidAnatomy Overview Overview The is a highly vascular, brownish-red gland located anteriorly in the lower neck, extending from the level of the fifth cervical vertebra down to the first thoracic. The gland varies from an H to a U shape and is formed by 2 elongated lateral lobes with superior and inferior poles connected by a median isthmus, with an average height of 12-15 mm
The surgical anatomy of the recurrent laryngeal nerve and inferior thyroid artery: a systematic review and meta-analysis Print | PDF PROSPERO This information has been provided by the named contact for this review. CRD has accepted this information in good faith and registered the review in PROSPERO. CRD bears no responsibility or liability for the content of this registration record, any associated files or external websites. Email salutation (e.g. "Dr Smith" or "Joanne") for correspondence
: The investigators aimed at investigating the effects of thyroidectomy on tracheal anatomy and airflow in patients with benign nodular goiter, employing a prospective observational study. Magnetic resonance images of the neck and respiratory flow-volume curves were performed prior to and six months following surgery. Tracheal and thyroid volumes, smallest cross-sectional area of the trachea (SCAT), tracheal narrowing, tracheal deviation and tracheal encirclement by the thyroid were evaluated. Through flow-volume (...) Tracheal Anatomy After Thyroidectomy Tracheal Anatomy After Thyroidectomy - Full Text View - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer to the if submitting registration or results information. Search for terms x × Study Record Detail Saved Studies Save this study Warning You have reached the maximum number of saved studies (100). Please remove one or more studies before adding more. Tracheal Anatomy After Thyroidectomy The safety and scientific validity
Ultrasound comparison of external and internal neck anatomy with the LMA Unique Internal neck anatomy landmarks and their relation after placement of an extraglottic airway devices have not been studied extensively by the use of ultrasound. Based on our group experience with external landmarks as well as internal landmarks evaluation with other techniques, we aimed use ultrasound to analyze the internal neck anatomy landmarks and the related changes due to the placement of the Laryngeal Mask (...) Airway Unique.Six subjects were recruited. Ultrasound measurements of hyoid-mental distance, thyroid-cricoid distance, thyroid height, and thyroid width were found to be significantly (p < 0.05) overestimated using a tape measure. Sagittal neck landmark distances such as thyroid height, sternal-mental distance, and thyroid-cricoid distance significantly decreased after placement of the Laryngeal Mask Airway Unique.The laryngeal mask airway Unique resulted in significant changes in internal neck
A reappraisal of vascular anatomy of the parathyroid gland based on fluorescence techniques Identification of the parathyroid glands (PGs) during thyroid surgery may prevent their inadvertent surgical removal and prevent postoperative hypoparathyroidism. However, identification of the PGs does not guarantee their function, and their vascular supply needs to be preserved as well. The recent introduction of intraoperative indocyanine green (ICG) fluorescent angiography of the PGs during thyroid (...) surgery allows for the appraisal of the vascular anatomy and evaluation of PG function. The use of this tool could lead to a significant reduction in the rate of postoperative hypoparathyroidism, as it allows surgeons to adapt their surgical technique for the preservation of the PGs. ICG fluorescent angiography is currently the only available real-time tool to assess the vascular blood supply of each individual PG intraoperatively and can thus assist surgeons in their decision-making. Herein, we
Surgical anatomy of double pyramidal lobe on total thyroidectomy: a rare case report Double pyramidal lobe is a scarce anatomical variation of the thyroid gland. Its presence impinges on the completeness of total and subtotal thyroidectomy and the postoperative treatment. Surgeons should be always aware of this variation in order to perform sufficient resection of the thyroid gland and minimize the possibility of recurrence of benign and malignant thyroidopathies.
Thyroidectomy Improves Tracheal Anatomy and Airflow in Patients with Nodular Goiter: A Prospective Cohort Study A large goiter may cause compression of the trachea. The aim of this study was to investigate the impact of thyroidectomy on tracheal anatomy and airflow and to correlate this with changes in health-related quality of life (HRQoL) in patients with benign nodular goiter.Magnetic resonance images of the neck and respiratory flow-volume curves, including both inspiration and expiration (...) , were performed prior to and 6 months following surgery. HRQoL was measured by selected scales from the thyroid-specific patient-reported outcome (ThyPRO). Cohen's effect size (ES) was calculated as mean change divided by standard deviation at baseline. ES of 0.2-0.5 were defined as small, 0.5-0.8 as moderate, and values >0.8 as large.Sixty-five patients completed all examinations. Median goiter volume was 58 mL (range, 14-642 mL) before surgery with surgical removal of a median of 43 g (range, 8