Buck Martinez has dealt with multiple types of cancer. Initially, he was diagnosed with chronic lymphocytic leukemia (CLL), a slow-progressing blood cancer. More recently, he revealed that the cancer had spread to his lungs, indicating a lung cancer diagnosis related to the metastasis of his prior cancer. Additionally, there is mention that he was diagnosed with a type of head and neck cancer called squamous cell carcinoma at one point. In summary:

• Chronic lymphocytic leukemia (CLL) was his initial cancer.
• Later, the cancer spread to his lungs (lung cancer due to metastasis).
• He also had squamous cell carcinoma, a type of head and neck cancer.

He has undergone multiple rounds of treatment and chemotherapy and has shown resilience in returning to work despite ongoing care.