Monteiro-Brás, T., Araújo, I., Amorim, M.L., Azevedo, A., Regadas, L., Faria, R. and Coutinho, R. 2026. Clonally Related Chronic Myelomonocytic Leukemia and Erdheim-Chester Disease with KRAS Mutation: A Rare and Challenging Case. Acta Médica Portuguesa. 39, 3 (Mar. 2026), 241–242. DOI:https://doi.org/10.20344/amp.24231.