We report the case of a bilateral carotid body paraganglioma which gave metastases to the lung parenchyma; the rarity of diffuse visceral spread is emphasised in this article. The patient was a 69-year-old woman operated for a right carotid body paraganglioma in 1997. In August 2002, a recurrent left carotid body paraganglioma was resected. Three months later she started presenting minimum hemoptysis and pulmonary tumours were detected during a routine chest roentgenographic examination. A right upper lobectomy and a wedge resection in the lower lobe were performed to remove them. Grossly, the greatest tumour measured 3.3x2.5x2.3cm and was well circumscribed and subpleural. It was histologically confirmed that these pulmonary tumours were metastases from the primary paraganglioma.
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http://dx.doi.org/10.1016/j.icvts.2004.06.010 | DOI Listing |
J Exp Biol
January 2025
Department of Zoology, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada.
Peripheral arterial chemoreceptors monitor the levels of arterial blood gases and adjust ventilation and perfusion to meet metabolic demands. These chemoreceptors are present in all vertebrates studied to date but have not been described fully in reptiles other than turtles. The goals of this study were to 1) identify functional chemosensory areas in the South American rattlesnake (Crotalus durissus) 2) determine the neurochemical content of putative chemosensory cells in these areas and 3) determine the role each area plays in ventilatory and cardiovascular control.
View Article and Find Full Text PDFFront Physiol
January 2025
Faculty of Sport Sciences, Waseda University, Tokorozawa, Japan.
Introduction: The effect of mechanoreflex on central blood pressure (BP) is unclear, although the influence of metaboreflex has been investigated. A relatively small contribution of the mechanoreflex to the pressor response to exercise has been considered in humans because many studies have failed to isolate the mechanoreflex-mediated pressor response. In a recent study, we successfully isolated a mechanoreflex-mediated pressor response using static passive stretching (SPS) in the forearm.
View Article and Find Full Text PDFJ Ultrasound Med
January 2025
Department of Vascular Ultrasonography, Xuanwu Hospital, Capital Medical University, Beijing, China.
Objectives: This study analyzed carotid artery remodeling characteristics in early carotid atherosclerosis (ECAS).
Methods: The 1021 participants were evaluated using ultrasonography and categorized into three groups: Group A, 391 participants with increased intima-media thickness (IMT); Group B, 300 participants with atherosclerotic plaque only on the carotid bulb (CB); and the control group (330 participants). The ratios of the diameters in the CB to those in the common carotid artery (D) and internal carotid artery (D) were defined as carotid index1 (CI) and 2 (CI).
Int J Stroke
January 2025
Department of Health Security System, Center for Health Security, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
background: : Intravenous thrombolysis (IVT) for acute ischemic stroke (AIS) related to underlying intracranial artery dissection (IAD) poses potential risks, including the exacerbation of intramural hematoma and the rupture of the dissected arterial wall. However, the safety of IVT in this specific population remains uncertain.
aims:: This study aimed to assess whether IAD is associated with an increased risk of intracranial hemorrhage (ICH) following IVT and to evaluate its impact on functional outcomes.
BMC Cardiovasc Disord
January 2025
Department of Endocrinology and Metabolism, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China.
Background: The medical community has long been concerned about the cardiovascular disease risk in patients with type 2 diabetes. While liver fibrosis scores were originally designed for application in individuals with liver steatosis, an increasing number of studies have shown that they are also associated with cardiovascular disease risk. However, the association between Fibrosis-4 (Fib-4) in liver fibrosis scores and carotid atherosclerosis (CA) in patients with type 2 diabetes remains unclear.
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