Cutaneous T-cell lymphomas (CTCLs) are a heterogeneous group of Non-Hodgkin lymphomas with a variety of clinical presentation and outcomes. The diagnosis and treatment of CTCLs have evolved significantly with advances in our understanding of their pathogenesis and biological behaviors through immunophenotypic, molecular, and cytogenetic analysis and clinical correlation. The diagnosis and classification of CTCLs depend on integration of clinical presentation, histology, immunophenotype, molecular and/or cytogenetic findings. Accurate diagnosis and staging are essential for proper treatment and prognosis of the patients. The book Cutaneous T-Cell Lymphoma (CTCL): Clinical Features, Diagnosis and Treatment Options aims to provide the most up-to-date knowledge of the diagnosis, prognosis and treatment strategies of CTCL. Each chapter focuses on a different aspect of CTCL: clinical presentation, pathology, therapeutic options, role of radiation therapy, and in-depth discussion of the specific subtypes of CTCL classified under the most recent World Health Organization (WHO) classification of lymphoid neoplasms. The authors are practicing physicians in major medical centers and university hospitals, and are familiar with the challenges of diagnosing and treating patients with CTCL. The book is written for the practicing physicians and provides practical information and advice for their daily practice. Residents, fellows and other trainees will also find the contents of this book useful for their education and board preparation. The authors hope that the material covered in this book will serve as a foundation for the readers to keep up with future developments in the field.