OBJECTIVE. CT scans of the chest in 32 patients undergoing immunothera
py for metastatic renal cell carcinoma were evaluated to determine the
incidence and significance of axillary lymph node enlargement during
therapy, CONCLUSION. Axillary node enlargement in cancer patients unde
rgoing immunotherapy should not be assumed to be metastatic in origin
but may result from the stimulation of the immune system during treatm
ent.