Reality of Zuckerkandl tubercle and relationship with other anatomical variations.

Aim: The tubercle of Zuckerkandl (TZ) is considered to be the fusion point of the ultimabranchial body and the median thyroid body. We aimed to evaluate the frequency of TZ and its relationship with other anatomical variations and recurrent laryngeal nerve (RLN) paralysis.

Material And Methods: Data regarding the thyroid lobe and RLN of patients with thyroidectomy between June 2016 and December 2019 were retrospectively evaluated.

Persistence of spike protein at the skull-meninges-brain axis may contribute to the neurological sequelae of COVID-19.

SARS-CoV-2 infection is associated with long-lasting neurological symptoms, although the underlying mechanisms remain unclear. Using optical clearing and imaging, we observed the accumulation of SARS-CoV-2 spike protein in the skull-meninges-brain axis of human COVID-19 patients, persisting long after viral clearance. Further, biomarkers of neurodegeneration were elevated in the cerebrospinal fluid from long COVID patients, and proteomic analysis of human skull, meninges, and brain samples revealed dysregulated inflammatory pathways and neurodegeneration-associated changes.

Risk Factors for Right Paratracheal Posterolateral Lymph Node Metastasis in Papillary Thyroid Cancer.

Objectives: The incidence of papillary thyroid cancer (PTC) is increasing, and due to the favorable postoperative survival rates, the extent of surgery should be carefully determined, and complications during the operation should be avoided. The recurrent laryngeal nerve (RLN) divides the right paratracheal lymph node (RPTLN) into anteromedial and posterolateral compartments due to its anatomical course on the right and left sides of the neck, and the posterolateral lymph nodes are in close proximity to the RLN. Due to the risk of this complication, in this study, we aimed to determine the risk factors for the development of right paratracheal posterolateral lymph node (RPTPLLN) metastasis in PTC.

Preoperative Preparation in Hyperthyroidism and Surgery in the Hyperthyroid State.

Hyperthyroidism is a clinical condition that develops due to the excessive production and secretion of thyroid hormones by the thyroid gland, leading to an elevated concentration of thyroid hormones in tissues. Hyperthyroidism is characterized by low TSH and elevated T3 and/or T4, with the most common causes being Graves' disease, toxic multinodular goiter, and solitary toxic adenoma. T3 is the peripherally active form of thyroid hormone, affecting nearly each tissue and system.