Albert Sézary was a French dermatologist known for his significant contributions to the field of skin diseases. He is particularly recognized for his research on mycosis fungoides, a type of skin lymphoma. His work helped improve the understanding and treatment of this rare condition. In addition to his research, Sézary developed the Sézary syndrome, a severe form of mycosis fungoides characterized by the presence of cancerous T-cells in the blood. His findings have had a lasting impact on dermatology, influencing both diagnosis and therapeutic approaches for patients with skin-related cancers.