A distribution of tumor size at detection is derived within the framework of a mechanistic model of carcinogenesis with the object of estimating biologically meaningful parameters of tumor latency. Its limiting form appears to be a generalization of the distribution that arises in the length-biased sampling from stationary point processes. The model renders the associated estimation problems tractable. The usefulness of the proposed approach is illustrated with an application to clinical data on premenopausal breast cancer.
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http://dx.doi.org/10.1073/pnas.93.13.6671 | DOI Listing |
J Family Med Prim Care
December 2024
Histopathology, Department of Pathology, Rajendra Institute of Medical Sciences, Ranchi, Jharkhand, India.
Background: Ovarian tumors are the most prevalent neoplasms worldwide, affecting women of all ages. According to Globocan's 2022 projections, by 2050, the number of women diagnosed with ovarian cancer worldwide will increase by over 55% to 503,448. The number of women dying from ovarian cancer is projected to increase to 350,956 each year, an increase of almost 70% from 2022.
View Article and Find Full Text PDFBMC Public Health
January 2025
Department of Thoracic Surgery, the 2nd Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, 050000, PR China.
Background: Pulmonary space-occupying lesions are typical chronic pulmonary diseases that contribute significantly to healthcare resource use and impose a large disease burden in China. A time-series ecological trend study was conducted to investigate the associations between environmental factors and hospitalizations for pulmonary space-occupying lesions in North of China from 2014 to 2022.
Methods: The DLNM was used to quantify the association of environmental factors with lung cancer admissions.
BMC Pediatr
January 2025
Department of Paediatrics, Nnamdi Azikiwe University, Nnamdi Azikiwe University Teaching Hospital, Nnewi, Anambra state, Nigeria.
Background: Soft tissue tumors (STTs) in adolescents are relatively rare, and their characteristics and behavior have not been well studied in this age group. The aim of this study was to describe the clinicopathologic patterns of STTs in adolescents aged 10-19 years according to the 2020 WHO classification.
Method: A 10-year retrospective cross-sectional study of 632 surgical samples from adolescents was conducted at a tertiary health facility to determine the frequency, histological patterns and characteristics of STTs in this population.
BMC Cancer
January 2025
Department of Biochemistry, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
Background: Inadequate treatment responses, chemotherapy resistance, significant heterogeneity, and lengthy treatment durations create an urgent need for new pancreatic cancer therapies. This study aims to investigate the effectiveness of gemcitabine-loaded nanoparticles enclosed in an organo-metallic framework under ketogenic conditions in inhibiting the growth of MIA-PaCa-2 cells.
Methods: Gemcitabine was encapsulated in Metal-organic frameworks (MOFs) and its morphology and size distribution were examined using transmission electron microscopy (TEM) and Dynamic light scattering (DLS) with further characterization including FTIR analysis.
Support Care Cancer
January 2025
Department of Physical Medicine and Rehabilitation, Faculty of Medicine, Kutahya Health Sciences University, Kutahya, Turkey.
Purpose: To determine whether body awareness and upper extremity functionality are affected in patients with or without lymphedema development after breast cancer surgery (BCS) in comparison with individuals without a history of cancer.
Methods: The study included a total of 102 individuals, including 34 who developed lymphedema after BCS (mean age: 43.88 ± 12.
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