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Investigating the Impact of Tumor Biology and Social Determinants on Time to Diagnosis and Stage at Presentation of Wilms Tumor.
Journal of Pediatric Hematology/oncology 2024 April 2
Delays in diagnosis and time to diagnosis generally are used interchangeably in cancer disparity research, but these terms may have important differences. Although these terms are related, we hypothesize that time to diagnosis is determined by the aggressiveness of the tumor based on intrinsic factors such as tumor biology, whereas delays in diagnosis are caused by extrinsic factors such as socioeconomic status, leading to presentation at higher stage of disease due to barriers of care. We conducted a retrospective study of 306 patients diagnosed with Wilms tumor at Children's Hospital Colorado between 1971 and 2016 identifying patient barriers as extrinsic markers and using unfavorable histology and loss of heterozygosity as markers of aggressive tumor biology. Multivariable logistic regression was performed. Patients with Medicaid were more likely to present greater than 4 days after initial symptoms compared to those with private insurance, and those with housing concerns were more likely to be diagnosed greater than 9 days from initial symptoms. Tumor biology was noted to be associated with higher stage at diagnosis, but patient barriers were not. These findings suggest the interplay between tumor biology, patient barriers, diagnostic timing, and stage at diagnosis is more complex, multifactorial, and in need of further study.
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