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Τετάρτη 10 Μαρτίου 2021

Hoffman Syndrome as a Rare Presentation of a Common Thyroid Condition

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Clinical Thyroidology, Volume 33, Issue 3, Page 140-146, March 2021.
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Radiofrequency Ablation for Papillary Thyroid Microcarcinoma Is Safe and Effective in Long-Term Follow-up

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Clinical Thyroidology, Volume 33, Issue 3, Page 121-123, March 2021.
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Withholding Radioactive Iodine for Lower-Risk Papillary Thyroid Cancers Is Safe, but Delays the Certainty of Treatment Response

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Clinical Thyroidology, Volume 33, Issue 3, Page 117-120, March 2021.
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Lingering Questions about Active Surveillance for Papillary Thyroid Microcarcinomas

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Clinical Thyroidology, Volume 33, Issue 3, Page 128-130, March 2021.
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The Usefulness of Contrast-Enhanced Ultrasound to Evaluate Small Solid Thyroid Nodules Compared to TI-RADS

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Clinical Thyroidology, Volume 33, Issue 3, Page 114-116, March 2021.
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Molecular Genetic Testing Can Be Performed on Thyroid Cytology Slides Using the ThyroSeq v3 Genomic Classifier

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Clinical Thyroidology, Volume 33, Issue 3, Page 110-113, March 2021.
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Combination Pembrolizumab Plus Lenvatinib May Be Option in Anaplastic and Poorly Differentiated Thyroid Cancers

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Clinical Thyroidology, Volume 33, Issue 3, Page 131-133, March 2021.
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Solute Carrier Proteins and Their Role in Thyroid Hormone Synthesis

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Clinical Thyroidology, Volume 33, Issue 3, Page 107-109, March 2021.
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Preoperative Vitamin D Deficiency Is a Risk Factor for Postsurgical Hypoparathyroidism

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Clinical Thyroidology, Volume 33, Issue 3, Page 137-139, March 2021.
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Who Is Eligible for Thyroid Cancer Active Surveillance in a Population with a Restrictive Diagnostic Protocol?

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Clinical Thyroidology, Volume 33, Issue 3, Page 124-127, March 2021.
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An anatomical investigation of the proximal vertebral arteries (V1, V2)

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Surg Radiol Anat. 2021 Mar 10. doi: 10.1007/s00276-021-02712-x. Online ahead of print.

ABSTRACT

INTRODUCTION: The most common type of vascular complication during cervical spine surgery is the vertebral artery (VA) injury. The presence of anatomical variation in the artery's morphology has been a significant factor for arterial injury during surgery. Therefore, physicians planning interventions in the craniospinal region need to be aware of the extents of variations. In addit ion to vascular injury, anatomical variations can predispose to some pathologies in the posterior circulation territory. To provide useful data to interventional radiologists, anatomists, and surgeons, we evaluated the anatomical features of the V1 and V2 segments of the VA in a South African population.

MATERIALS AND METHODS: The study is an observational, retrospective chart review of 554 consecutive South African patients (Black, Indian and White) who had undergone computed tomography angiography (CTA) from January 2009 to September 2019.

RESULTS: The VA exhibited morphological variation in its course. We report the incidence of variant origin of the left VA, all from the aortic arch. Variation in the level of entry into the transverse foramen ranged between C7 and C3. A left dominant pattern was observed; we also report on hypoplasia of the VA. In addition, we report incidence of VA tortuosity at V1, V2 to be 76.6% and 32.1%, respectively.

CONCLUSIONS: The base line data established in this study regarding the diameter, variant origin, and level of entry into the transverse foramen will assist neurosurgeons and interventional radiologists in interpreting, diagnosing, and planning and executing various vascular procedures and treatment of pathology in the vicinity of the VA.

PMID:33689007 | DOI:10.1007/s00276-021-02712-x

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Atypical branching of the musculocutaneous and median nerves with associated unusual innervation of muscles in the anterior compartment of the arm: case report and plea for extension of the current classification system

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Surg Radiol Anat. 2021 Mar 10. doi: 10.1007/s00276-021-02731-8. Online ahead of print.

ABSTRACT

PURPOSE: Variations of the peripheral nervous system in the upper limb, especially of the musculocutaneous and median nerves, are common, but closer attention to the knowledge of the variant anatomy should be paid to avoid iatrogenic injury or to understand the unusual clinical signs.

METHODS: During a routine dissection course, bilateral variations were observed in a Centra l European male cadaver.

RESULTS: Variable branching of the musculocutaneous and median nerves associated with atypical innervation of the muscles in the anterior compartment of the arm and other concomitant variations were found bilaterally. In both cases, the musculocutaneous nerve innervated only the coracobrachialis muscle and terminated inside the muscle belly. Branches to the biceps brachii and brachialis muscles arose either directly from the median nerve or its branches. On the right side, two communicating branches between the roots of the median nerve were noted, and a common medial cutaneous trunk originated from the lateral cord. On the left side, a communicating branch extended from the lateral cord to the medial root of the median nerve and a tributary to the axillary vein passed through a window formed by the roots of the median nerve and the communicating branch.

CONCLUSION: There exist only few cases in the literature describing similar variations, but t he present arrangement has not yet been reported to the best of our knowledge. With the proposed extension to the existing classification system, we aim to provide clearer orientation in the variability of the musculocutaneous and median nerves.

PMID:33689004 | DOI:10.1007/s00276-021-02731-8

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Relationship between the posterior septal artery and the upper edge of the choana

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Surg Radiol Anat. 2021 Mar 10. doi: 10.1007/s00276-021-02732-7. Online ahead of print.

ABSTRACT

BACKGROUND: The pedicled nasoseptal flap has been a key element in advancing the endoscopic transnasal approach (ETA) for the treatment of skull base lesions from the anterior cranial fossa to the occipitocervical junction. To preserve vascular supply, an anatomical knowledge of the location of the posterior septal artery (PSA) is essential. The objective of this work is to establ ish the relationship between PSA and the superior edge of the choana to define a safety margin during the opening of the sphenoidal rostrum preserving PSA.

METHODS: One hundred and eighty angiotomographies of the brain were assessed. The sphenopalatine artery (SPA) was evaluated in the pterygopalatine fossa and PSA at its entrance into the nasal cavity and on the sphenoidal rostrum.

RESULTS: PSA was found in all 3 tomographic planes (axial, coronal and sagittal) in 100 patients (200 PSAs). Thirty-five were male and 65 were females. Average age was 62 years with a range of 19-90 years. Total average distance between PSA and the superior edge of the choana was 8.5 mm with a range of 2.5-18 (12.45 90th percentile).

CONCLUSION: Although the distance between the choanal edge and PSA is 8.5 mm on average, due to its variability, a distance of at least 12.45 mm for the opening of the sphenoidal sinus in the ETA approach should be considered as a safety margin.

PMID: 33689006 | DOI:10.1007/s00276-021-02732-7

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