Disparities in the initial presentation of melanoma across two socioeconomically diverse New York City neighborhoods.
Authors: Alyssa Swearingen, Mary Gao, Pearl Ugwu-Dike, Avani Kolla Patel, Jenne P. Ingrassia, Suzanne Vang, Prince Adotama, Jennifer A. Stein, Soutrik Mandal, David Polsky
Journal: Journal of Clinical Oncology (2024)

1593 Background: Disparities in stage at diagnosis among melanoma patients are often seen between urban and rural communities, with patients in rural areas being diagnosed with more advanced tumors. Factors contributing to the disparities include decreased access to dermatologists in rural areas, and lower socioeconomic status (SES). We investigated urban disparities in melanoma T stage at diagnosis among patients residing in 2 New York City (NYC) neighborhoods of differing SES and receiving care within the NYU Langone Health System. The neighborhoods were: Upper East Side (UES) and Brighton Beach/Coney Island (BB/CI). Methods: We conducted a retrospective chart review (NYU IRB 23-01020) of melanoma patients (N=243) diagnosed from 2018-2022 using ICD-10-CM codes: C43 (malignant melanoma of skin); D03 (melanoma in situ); and Z85.820 (personal history of malignant melanoma of skin). For community-level data we used the American Academy of Dermatology’s “Find a Dermatologist” search function to locate member-dermatologists; New York State Cancer Registry data (2016-2020) to determine annual melanoma incidence; and the United States Census Bureau Public Use Microdata Areas to determine the proportion of Non-Hispanic Whites (NHW), income levels, and educational attainment. The distribution of T stages was compared using a chi-square test. A two-sample test was used to assess equality of proportions. Results: In UES, the annual melanoma incidence was 30.2/100,000 (95% CI: 27.4-33.2); NHW comprised 74.6% of the population; the median household income was $135,820; 78% attained education higher than high school; and there are 190 dermatologists within a 0.5-mile radius. In BB/CI the annual melanoma incidence was 14/100,000 (95% CI: 11.6-16.9); NHW comprised 55.1% of the population; the median household income was $43,118; 46% attained education higher than high school; and there is 1 dermatologist within a 0.5-mile radius. There are 15 dermatologists within a 3.0-mile radius. 155 and 88 patients met inclusion criteria in UES and BB/CI respectively. The distribution of T stages (i.e. Tis to T4) was significantly different between UES and BB/CI with higher proportions of advanced stage tumors in BB/CI (p=0.0002). Specifically, the proportion of (T2+T3+T4) tumors/total melanomas was 35/155 (23%) in UES; and 41/88(47%) in BB/CI (p&lt;0.0001). For reference, the proportion of T2+T3+T4 melanomas in the United States is 30%. Conclusions: We identified substantial disparities in the initial presentation of melanoma in 2 NYC neighborhoods, with proportionately more advanced stage tumors in the community of low educational attainment, less access to dermatologic services, and lesser household income. Neighborhood-based approaches to uncover melanoma disparities can identify areas for community outreach and engagement efforts to improve melanoma awareness and access to dermatologic care.