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Geochemical signatures and nanomechanical properties of echinoid tests from nearshore habitats of Florida: environmental and physiological controls on echinoid biomineralization.
PeerJ
January 2025
Florida Museum of Natural History, University of Florida, Gainesville, FL, United States of America.
The mechanisms that regulate minor and trace element biomineralization in the echinoid skeleton can be primarily controlled biologically (, by the organism and its vital effects) or by extrinsic environmental factors. Assessing the relative role of those controls is essential for understanding echinoid biomineralization, taphonomy, diagenesis, and their potential as geochemical archives. In this study, we (1) contrast geochemical signatures of specimens collected across multiple taxa and environmental settings to assess the effects of environmental and physiological factors on skeletal biomineralogy; and (2) analyze the nanomechanical properties of the echinoid skeleton to assess potential linkages between magnesium/calcium (Mg/Ca) ratios and skeletal nanohardness.
View Article and Find Full Text PDFDiagnostic Accuracy of Imperforate Hymen at a Single Referral Center.
J Pediatr Adolesc Gynecol
January 2025
Division of Pediatric and Adolescent Gynecology, Department of Obstetrics & Gynecology, Baylor College of Medicine, Houston, Texas.
Study Objective: Imperforate hymen (IH) is a rare congenital anomaly that results in vaginal outlet obstruction. IH can cause significant morbidity if not managed appropriately, which depends on accurate identification of the condition. However, data on the accuracy of IH diagnosis is limited.
View Article and Find Full Text PDFObjective: While the association of a syrinx with a tethered spinal cord in the context of VACTERL (vertebral defects [V], imperforate anus or anal atresia [A], cardiac malformations [C], tracheoesophageal defects [T] with or without esophageal atresia [E], renal anomalies [R], and limb defects [L]) association is known, the incidence of idiopathic syrinxes among these patients has not previously been reported. The authors aimed to characterize the incidence of syrinxes and the pattern of congenital anomalies in pediatric patients with VACTERL association, with a specific focus on the presence of idiopathic syrinxes in this population.
Methods: An institutional database was retrospectively queried for all pediatric patients with VACTERL association.
Transurethral unroofing of a Cowper's syringocele.
Urol Case Rep
January 2025
Fox Chase Cancer Center, Department of Urology, Philadelphia, PA, 333, Cottman Ave, Philadelphia, PA, 19111, USA.
Syringoceles are cystic dilations of the bulbourethral gland, also known as Cowper's gland. Syringoceles are a rare pathology with no standard treatment. Herein, we report the diagnosis and endoscopic management of an imperforate syringocele causing bothersome urinary symptoms in an adult male patient.
View Article and Find Full Text PDFSirenomelia-Challenges and Treatment Approach in a Rare Case.
Birth Defects Res
December 2024
The Department of Surgery and Urology for Children and Adolescents, Medical University of Gdansk, Gdansk, Poland.
Introduction: Sirenomelia is a very rare congenital structural anomaly characterized by abnormal development of the caudal region of the body with varying degrees of fusion of lower limbs. Mostly, the condition is lethal for the baby. Most babies do not survive even after surgery.
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