Inclusion Criteria

• Undergoing or previously underwent radiotherapy at The University of Texas MD Anderson Cancer Center for hematologic or related disorders.
• Available clinical, imaging, laboratory, treatment, and/or outcome data relevant to study objectives.
• Ability to provide informed consent for prospective participation, when applicable.

Exclusion Criteria

Participants meeting any of the following criteria will be excluded:

• Inability to provide informed consent, or when applicable, the absence of a legally authorized representative able to provide consent for prospective participation.
• Insufficient clinical information available to support study objectives.
• Pregnant women