Abstract

Persons experiencing homelessness (PEH) have low rates of cancer screening and worse cancer mortality compared with persons not experiencing homelessness. Data regarding cancer diagnosis and treatment in PEH are limited. We investigated cancer prevalence and use of radiation therapy (RT) in PEH. Patients presenting between January 1, 2014, and September 27, 2021, at a large metropolitan hospital system were assessed for homelessness via intake screening or chart search. PEH data were cross-referenced with the institution's cancer database to identify PEH with cancer diagnoses. Demographic, clinical, and treatment variables were abstracted. Of a total of 9654 (9250 evaluable) PEH with a median age of 42 years, 81 patients (0.88%) had at least 1 cancer diagnosis and 5 had multiple diagnoses, for a total of 87 PEH with at least 1 cancer diagnosis. The median age at diagnosis was 60 years. In total, 43% were female and 51% were Black, and 43% presented with advanced or metastatic disease. Lung (17%), prostate (15%), leukemia/lymphoma (13%), and head/neck (9%) were the most common diagnoses. In total, 17% of patients underwent surgery alone, 13% received chemotherapy alone, 14% received RT alone, and 6% received hormone therapy alone. A total of 8% of patients underwent no treatment, and 43% underwent multimodality therapy. In total, 58% of treated patients never achieved disease-free status. Of the 31 patients who received RT, 87% received external beam RT. Most patients (70%) received hypofractionated regimens. For patients who had multifraction treatment, the treatment completion rate was 85%, significantly lower than the departmental completion rate of 98% (P < .00001). In a large cohort of PEH in a metropolitan setting, cancer diagnoses were uncommon and were frequently in advanced stages. Most patients underwent single-modality treatment or no treatment at all. Despite the use of hypofractionation, the RT completion rate was low, likely reflecting complex barriers to care. Further interventions to optimize cancer diagnosis and treatment in PEH are urgently needed.

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