Which of the following tumor is associated with abscopal effect?: (A) Chronic myeloid leukemia, (B) Chronic lymphocytic leukemia, (C) Acute lymphoblastic leukemia, (D) Acute myelogenous leukemia
Answer is B. Abscopal effect - when spleen is exposed to any kind of damage, spleen synthesizes ceain growth factors required for proliferation of tumor cells. Therefore, when spleen is irradiated - decrease release of GF - Decrease in size of tumour. Associated with - CLL