Title PageMyelodysplastic Syndrome in a Patient with Cronkhite-Canada SyndromeKevin G. Shima*, Kevork Khadarianb*, Jewel Samadderc, Jiehao Zhoud, Cecilia Arana YiaDepartment of Medicine, Mayo Clinic, Hematology and Medical Oncology, Phoenix, ArizonaDepartment of Gastroenterology and Hepatology, Mayo Clinic, Scottsdale, ArizonaCenter of Individualized Medicine; Department of Gastroenterology and Hepatology, Mayo Clinic, Scottsdale, ArizonaDepartment of Pathology and Laboratory medicine, Mayo Clinic, Phoenix, Arizona*These authors contributed equally to this work.Key wordsCronkhite-Canada syndrome, myelodysplastic syndromes, myelodysplastic syndrome with single-lineage dysplasia (MDS-SLD), clonal hematopoiesis, low-risk myelodysplastic syndromesAbbreviations usedCCS, Cronkhite-Canada syndrome; MDS, myelodysplastic syndromes. MDS-SLD, myelodysplastic syndromes with single-lineage dysplasia; CH, clonal hematopoiesis; LR-MDS, low-risk myelodysplastic syndromesKey Clinical Message: We report the second case of concurrent diagnosis with Cronkhite-Canada Syndrome and myelodysplastic syndrome. This is the first published instance of myeloid malignancy focused sequencing in a patient with Cronkhite-Canada syndrome. This case highlights the interplay between inflammation-driven disorders and myelodysplastic syndrome and provides a starting point for future study.