Submitted by [deleted] t3_1167r4w in askscience
ParkieDude t1_j9hasxw wrote
Reply to comment by thecooliestone in Can doctors tell when cancer is caused by something specific, such as smoking or chemicals? by [deleted]
Lung Cancer. Non smoker. Adenocarcinoma, so roughly five types, each with 20 sub-types. NSCLC > Adenocarcinoma > about 100 variations. Take about a crash course with oncology.
About 20% with lung cancer have no known cause.
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