Classification of Tumor Radiosensitivity

Classification of tumor radiosensitivity is based on histology and divided into radiosensitive and radioresistant tumors based on their response to conventionally fractionated radiotherapy.

Radiosensitive tumors include:

• Lymphoma
• Myeloma
• Seminoma

Radioresistant tumors include:

• Renal cell
• Melanoma
• Thyroid
• Colorectal

Radioresistant tumors require stereotactic body radiation therapy (SBRT) for durable control.

Many of the tumors with intermediate radio sensitivity benefit from SBRT to provide long term control.