Αρχειοθήκη ιστολογίου

Πέμπτη 10 Μαρτίου 2022

Bilateral vertebral arteries arising distal to the left subclavian artery: embryological and anatomical description

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Surg Radiol Anat. 2022 Mar 9. doi: 10.1007/s00276-022-02903-0. Online ahead of print.

ABSTRACT

Abnormalities in the origin of vertebral arteries are relatively uncommon, but extremely rare when this abnormality happens on both sides. We present an anatomic variation in which both vertebral arteries came from the proximal descending thoracic aorta beyond the left subclavian artery with no other supra-aortic vessels accompanying the abnormality. The right vertebral artery took a retro-oesophageal course (lusoria artery), while the right and the left vertebral arteries enter the transverse foramina at the 7th cervical vertebra. From an embryological point of view, and overall controversial, this anomaly can be explained by the bilateral persistence of the 8th intersegmental artery as the origin of vertebral artery, instead of the dorsal segment of the 7th intersegmental artery being the origin, which is normally the case. The adequate identification of vertebral artery anomalies in complementary explorations is very important to avoid misdiagnosed vertebral occlusions or unexpected vertebral artery injuries during supra-aortic trunks, thyroid, and oesophagus open surgeries, among others, or even over the course of endovascular procedures.

PMID:35266028 | DOI:10.1007/s00276-022-02903-0

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Defining the limits and indications of the Draf III endoscopic approach to the lateral frontal sinus and maximizing visualization and maneuverability: a cadaveric and radiological study

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Eur Arch Otorhinolaryngol. 2022 Mar 9. doi: 10.1007/s00405-022-07323-9. Online ahead of print.

ABSTRACT

PURPOSE: The DRAF III procedure has been used for access to the lateralmost part of the frontal sinus. We sought to identify anatomical and radiological measurements as well as modifications that predict the lateral limits of visualization and surgical access after this procedure.

METHODS: Seven cadaver heads were imaged with computed tomography scan. The distance from midline to the medial orbital wall (MOWD), midline to the lateral end of the frontal sinus (MLD), the sum of MLDs (SMLD), interorbital distance (IOD) and the shortest anteroposterior distance of the frontal recess (APD) were utilized. The ratios MLD/MOWD, and SMLD/IOD were calculated. The same distances were measured on 41 CT scans. Orbital transposition (OT) and partial resection of the piriform aperture (PAR) were performed; the visualization and reach were ass essed. The angle of insertion was measured before and after the modifications.

RESULTS: Only the ratio MLD/MOWD was consistently predictive of access to the lateral, superior and posterior wall of the frontal sinus. Following the modifications, a visualization of 100% laterally was achieved with the 30- and 45 degree endoscopes and every lateral recess could be reached with the 70 degree suction. A mean increase of the angle of insertion of 25.3 and 59.6% was recorded after OT and PAR, respectively.

CONCLUSIONS: IOD rather than APD defines the limits of the Draf III approach to the lateral frontal sinus and MLD/MOWD ratio can serve as a useful preoperative tool. Along to the already described OT, PAR increases visualization and reach of the lateral frontal sinus.

PMID:35266026 | DOI:10.1007/s00405-022-07323-9

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Epidemiology and Management of Zenker Diverticulum in a Low-Threshold Single-payer Health Care System

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This cohort study examines population-wide incidence of Z enker diverticulum in Finland over a 20-year period and management strategies across specialties and treatment settings.
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Kaposiform Hemangioendothelioma of Internal Auditory Canal Presenting in 4-Week-Old Newborn

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This case report describes a rare case of a kaposiform heman gioendothelioma in the internal auditory canal of a 4-week-old newborn.
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A Perplexing Pediatric Parotid Mass

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A previously healthy 8-year-old boy presented to an outpa tient clinic for further evaluation of a fluctuating right parotid mass that had been present for 3 years. What is your diagnosis?
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Chemosensory Psychophysical Evaluation of Gustatory Dysfunction in Patients With Long-Term COVID-19

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This cross-sectional study evaluates self-reported gustat ory dysfunction in patients with long-term COVID-19.
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Possible Association between Lenvatinib Use and Primary Adrenal Insufficiency: Additional Studies Very Much Needed

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Clinical Thyroidology, Volume 34, Issue 3, Page 132-135, March 2022.
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18F–FDG–PET/CT May Reduce Unnecessary Thyroid Surgery in Cytologically Indeterminate Thyroid Nodules

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Clinical Thyroidology, Volume 34, Issue 3, Page 116-118, March 2022.
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The Role of a Computer-Aided Diagnosis System in the Interpretation of Thyroid Nodules with Challenging Sonographic Features

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Clinical Thyroidology, Volume 34, Issue 3, Page 112-115, March 2022.
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Pharyngolaryngeal Morbidity With the Laryngeal Mask Airway SupremeTM at Different Fiberoptic Bronchoscopy Grades: An Observational Study

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To assess whether the different fiberoptic bronchoscopy (FOB) grades of laryngeal mask airway (LMA) Supreme™ affects pharyngolaryngeal morbidity (PLM, including sore throat, dysphonia, pharyngoxerosis, and dysphagia) after general anesthesia.
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Minipterional Approach for Middle Fossa Skull Base Lesions: Technical Note

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J Neurol Surg B Skull Base
DOI: 10.1055/s-0042-1743464

Surgical access to the middle fossa can be technically challenging. As neurosurgery evolves to minimally invasive approaches, the objective of this study is to demonstrate the extension of the Minipterional approach to access the middle fossa. We present a new surgical approach to the middle fossa for the treatment of secondary trigeminal neuralgia. Three cases are reported to illustrate the following techniques: a patient with petrotentorial meningioma and trigeminal neuralgia, a patient with an arachnoid cyst compressing the fifth nerve, and a patient with a middle cerebral artery aneurysm and a long history of TN (trigeminal neuralgia) refractory to medical and surgica l treatments. All three experienced full symptom controls with no permanent neurological deficits. Therefore, the Minipterional technique might represent a feasible, effective, and safe option to treat refractory secondary TN. It also allows approaching these lesions when the posterior fossa approach is compromised by anatomical distortion and enables the simultaneous treatment of secondary trigeminal neuralgia and other lesions, such as aneurysms and meningiomas.
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Georg Thieme Verlag KG Rüdigerstraße 14, 70469 Stuttgart, Germany

Article in Thieme eJournals:
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The evolving role of molecular pathology in the diagnosis of salivary gland tumours with potential pitfalls

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Eur Arch Otorhinolaryngol. 2022 Mar 10. doi: 10.1007/s00405-022-07326-6. Online ahead of print.

ABSTRACT

Salivary gland tumors are diagnostically challenging owing to the morphological diversity within any tumor type and overlapping histomorphology and immunohistochemistry amongst different tumours. In past two decades, rapid progress has been made in the field of understanding the pathogenesis of these tumours with the discovery of many tumour specific translocations and rearrangements. This includes CRTC1-MAML2 and CRTC-MAML2 in mucoepidermoid carcinoma, MYBNFIB and MYBL1-NFIB fusions in adenoid cystic carcinoma, PLAG1 and HMGA2 in pleomorphic adenoma, ETV6-NTRK3 in secretory carcinoma, NR4A3 rearrangements in acinic cell carcinoma, PRKD1 mutations in polymorphous adenocarcinoma and EWSR1-ATF1 in clear cell carcinoma. This review is a lens for progress made till date in the molecular pathology of salivary gland tumours with a special focus on their role as diagnostic tools and implications on clinical management of the patient as prognostic and predictive markers.

PMID:35267084 | DOI:10.1007/s00405-022-07326-6

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