“…They have concluded that cumulative exposure to radon is associated with an increase in lung cancer mortality. Several studies have suggested that radon exposure might also induce other kinds of cancer, such as leukemia, non-Hodgkin's lymphoma, malignant melanoma, multiple myeloma, and cancers of the pancreas, stomach and kidney, as well as other non-malignant respiratory diseases (16)(17)(18)(19)(20)(21)(22)(23)(24). Nonetheless, the only significant positive association reported to date between cumulative radon exposure and any cause of mortality is for lung cancer.…”