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The optimal site for the isolation of beta-hemolytic streptococci (BHS) from throat cultures was investigated in 164 healthy elementary school children. All throat cultures were streaked onto duplicate blood agar plates (BAP), one of which was taken from the tonsillar fossae and the other from the posterior pharynx. BHS were isolated in cultures from 56 (34.2%) of the children. BHS were more frequently recovered from the tonsillar fossae than from the posterior pharynx (54 vs. 47; both sites, 45; tonsillar fossae only, 9; posterior pharynx only, 2; P < 0.0001). There were significantly more numerous colonies in the tonsillar fossae than in the posterior pharynx (p < 0.01). To conclude, the tonsillar fossae are more optimal sites of throat cultures to isolate BHS than the posterior pharynx.
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http://dx.doi.org/10.3346/jkms.1993.8.6.453 | DOI Listing |
Brain Sci
July 2025
Department of Neurosurgery, Alanya Alaaddin Keykubat University, Alanya 07400, Türkiye.
Identifying the etiological factors of syringomyelia, which can cause progressive neurological deficits in the spinal cord, is critically important for both diagnosis and treatment. This study aimed to assess the cranial morphometric features of patients with idiopathic syringomyelia by conducting comparative analyses with individuals diagnosed with Chiari Type I, Chiari Type I accompanied by syringomyelia, and healthy controls, in order to elucidate the potential structural contributors to the pathogenesis of idiopathic syringomyelia. In this retrospective and comparative study, a total of 172 patients diagnosed with Chiari Type I and/or syringomyelia between 2016 and 2024, along with 156 radiologically normal individuals, were included.
View Article and Find Full Text PDFSurg Neurol Int
July 2025
Department of Surgery, Division of Neurosurgery, University of British Columbia, Vancouver, Canada.
Background: Chiari 1 malformation (CM1) is a structural anomaly characterized by cerebellar tonsillar herniation through the foramen magnum. While typically associated with syringomyelia or hydrocephalus, its potential relationship with subarachnoid hemorrhage (SAH) remains poorly reported in the literature.
Case Description: We present the case of a 77-year-old woman who experienced recurrent episodes of thunderclap headache, which eventually progressed to altered consciousness following admission.
Brain Spine
July 2025
Department of Neurosurgery, The Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Yiwu, 322000, China.
Background: Chiari malformation type I (CM1) with syringomyelia caused by supratentorial lesions is extremely rare, and the mechanism has not been well explained.
Methods: A 25-year-old female patient with no significant medical history who presented with progressive pain in the left neck for one month. MRI examination showed a giant meningioma in the trigone of the lateral ventricle accompanied with CM1 and syringomyelia.
Cureus
April 2025
Neurosurgery, Hospital de Braga, Braga, PRT.
Chiari type I malformation (CM-1) is a condition that is often asymptomatic, though when symptoms occur, they commonly involve occipital headaches. Acute respiratory insufficiency as the presenting symptom requiring emergent surgical intervention is extremely rare. We present the case of a 51-year-old female who developed sudden-onset respiratory insufficiency due to CM-1 and syringomyelia affecting the brainstem, necessitating urgent surgical intervention.
View Article and Find Full Text PDFJ Neurosurg Pediatr
July 2025
2Department of Neurosurgery, Massachusetts General Hospital, Boston, Massachusetts.
Objective: Chiari malformation type 1 (CM1) is the most common neurological disorder of the craniocervical junction. CM1 is characterized by cerebellar tonsillar herniation below the foramen magnum, causing CSF obstruction and neural compression. Patients with CM1 suffer from highly variable symptoms, progression, comorbidities, and outcomes, partly due to poor understanding of CM1 pathogenesis.
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