One study from 1985 shows that people who were in the top quintile of green and yellow vegetable intake had relative risk of 0.3 of dying from cancer compared to the lowest quintile. As far as risk for developing cancer, in another study from the 1980s, smokers who ate more carrots were less likely to develop lung cancer (this effect was only seen in smokers,...
It's not a given, that they are not useful in solid tumors (also lymphoma are accounted among the solid tumors).
There are pyrimidine-like antimetabolites, e. g. 5-FU: https://en.wikipedia.org/wiki/Fluorouracil, while some purine antimetabolites were in development, see e. g. here: https://www.ncbi.nlm.nih.gov/pubmed/4066218.
There are some approaches that ...
1) Global incidence for HCC, 2018:
What is the global incidence of hepatocellular carcinoma (HCC) worldwide? (Medscape, 2019):
Worldwide, liver cancer was the fifth most common cancer and the third
most common cause of cancer deaths in 2018, with an estimated 841,080
new cases and 781,631 deaths. The incidence was highest in East Asia,
at 17.7 per ...