HEALTH PROFESSIONAL · SOURCE READING

Involved-field radiation therapy

Source: Chronic Lymphocytic Leukemia Treatment (PDQ®)–Health Professional Version, National Cancer Institute.

Source updated: April 25, 2025 · Captured 2026-09-09.

Selected source text with whitespace normalised. This Triangle page is not an NCI PDQ summary.

Context: Treatment of Recurrent or Refractory Chronic Lymphocytic Leukemia / Treatment Options for Recurrent or Refractory Chronic Lymphocytic Leukemia (CLL)

Relatively low doses of radiation therapy can be administered for lymphadenopathy that causes problems due to size or encroachment on adjacent organs. Sometimes radiation therapy to one nodal area or the spleen will result in an abscopal effect (i.e., the shrinkage of lymph nodes in untreated sites).

Preserved source evidence · Not medical advice