Purpose: Yolk sac tumors (YST) are a rare and aggressive germ cell tumor. We aimed to conduct a population-based cohort study and develop a nomogram to predict overall survival (OS) in pediatric patients with YST.
Methods: The Surveillance, Epidemiology, and End Results (SEER) database was used to identify all pediatric patients with YST diagnosed between 2000 and 2018. The log-rank test was used to compare survival curves. To examine the impact of each factor on overall survival, a multivariate Cox proportional hazards model was created. Based on the results of the Cox regression model, a nomogram was constructed.
Results: A total of 520 YST patients were identified. Overall survival rates for all patients were 92.2% at 3-year and 90.3% at 5-year, respectively. The outcome of Cox proportional hazard regression revealed that age, gender, primary sites, and treatment regimens were important independent predictors in this model. Based on the Cox regression model, we created a nomogram for predicting OS in pediatric YST patients. The chance of death increased with age in patients. Furthermore, patients with extra-gonadal YST have a lower survival rate than those with gonadal YST.
Conclusions: Our study revealed that age, gender, and primary site were found to be the most important predictors of the overall survival of pediatric YST, providing crucial epidemiological information for clinical management.
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http://dx.doi.org/10.1007/s00345-023-04616-4 | DOI Listing |
Virchows Arch
January 2025
Department of Pathology and Laboratory Medicine, University of Miami Miller School of Medicine, Miami, FL, USA.
Pediatric germ cell tumors represent a rare but biologically diverse group of neoplasms arising from pluripotent primordial germ cells. The 2022 edition of the WHO Classification of Pediatric Tumors introduced the first organ independent classification of germ cell tumors, reflecting advances in molecular biology, histopathology, and clinical practice. This review highlights the key changes, including the refined distinctions between the different subtypes.
View Article and Find Full Text PDFLife Sci Alliance
March 2025
https://ror.org/05f950310 Department of Development and Regeneration, Stem Cell Institute, KU Leuven, Leuven, Belgium
Mammalian pre-implantation development is entirely devoted to the specification of extra-embryonic lineages, which are fundamental for embryo morphogenesis and support. The second fate decision is taken just before implantation, as defined by the epiblast (EPI) and the primitive endoderm (PE) specification. Later, EPI forms the embryo proper and PE contributes to the formation of the yolk sac.
View Article and Find Full Text PDFArch Gynecol Obstet
January 2025
Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric & Gynecologic Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
Purpose: To provide a comprehensive understanding and propose a strategy for the management of extragonadal malignant germ cell tumors (EMGCTs) arising from extracranial and nonvaginal sites.
Methods: We retrospectively reviewed the cases of 12 patients with EMGCTs arising from extracranial and nonvaginal sites treated in our center over the past 38 years. Data on clinicopathological characteristics, treatment modalities, and follow-up information were analyzed.
J Obstet Gynaecol
December 2025
Department of Obstetrics and Gynecology, the Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, China.
Background: Ectopic pregnancies represent a potentially life-threatening medical emergency, with 95% being tubal. This meta-analysis aimed to identify early predictors for single-dose methotrexate (MTX) treatment failure in tubal pregnancies.
Methods: A literature search was conducted across several databases from their inception to December 2023, with references in the selected studies manually reviewed.
Children (Basel)
November 2024
Pediatric Surgery Unit, Salesi Children's Hospital, Polytechnic University of Marche, Via Filippo Corridoni, 16, 60123 Ancona, Italy.
Background And Aim: Ex vivo fluorescence confocal microscopy (FCM) systems are innovative optical imaging tools that create virtual high-resolution histological images without any standard tissue processing, either freezing or fixing in formalin and embedding in paraffin. These systems have opened an era that would revolutionize pathological examination by providing rapid, real-time assessments across various pathology subspecialties, potentially replacing conventional methods that are tissue- and time-consuming. This study aimed to present the first utilization of FCM in pediatric surgical oncology, focusing on assessing the benefits, particularly in facilitating rapid and accurate diagnosis.
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