Registry Platform Hematologic Malignancies (RUBIN) - Extension of Tumor Registry Lymphatic Neoplasms

This study is a registry — a long-term data collection effort — tracking patients with non-Hodgkin lymphoma (NHL) and other blood cancers over time to understand how these cancers progress, how treatments work in real-world settings, and what factors affect quality of life and survival. **You may be eligible if...** - You are 18 years old or older - You have been diagnosed with a non-Hodgkin lymphoma or other related blood cancer - You are either alive and can provide written consent, or your data can be collected retrospectively **You may NOT be eligible if...** - You have not received any systemic therapy (drug treatment) for your lymphoma Talk to your doctor to see if this trial is right for you.