Hodgkin Lymphoma
Defined by the presence of a particular abnormal cell called the Reed-Sternberg cell. It typically affects younger adults (teens to thirties) and older adults (above 55), and most often starts in lymph nodes in the neck or chest. Hodgkin lymphoma is one of the most curable cancers — cure rates exceed 85% with modern combination chemotherapy (the ABVD regimen and its variants), sometimes combined with radiation for early-stage disease.