{"entity":{"id":"1940","kind":"year","name":"1940 in oncology","aka":["1940"],"tldr":"Everything OnCo dates to 1940: 3 entries, 2 landmarks and 1 journal founded. Each line links to the record it was read from, so the year is a view of the corpus rather than a second copy of it.","summary":"3 dated entries in OnCo fall in 1940: 2 landmarks and 1 journal founded.\n\nOf those, 3 to the year only. Most of the corpus dates a fact to the year, because that is what the source it was read from gives; regulatory events and the readout calendar are the parts that carry a full date.\n\nEverything on this page is generated from the other records. It holds no fact of its own, and it changes when they do.","asOf":"2026-09-25","links":[],"tags":[],"related":["1939","1941"],"cancers":[],"sections":[],"technologies":[],"targets":[],"drugs":[],"companies":[],"institutions":[],"pathways":[],"terms":[],"trials":[],"people":[],"bottlenecks":[],"keyPapers":[],"journals":[],"dependsOn":[],"notes":["Generated from every dated field in the corpus, not written by hand. The groups and the fields behind them are listed in src/lib/year-groups.ts; the reader is src/lib/years.ts."],"year":1940,"events":[{"group":"history","date":"1940","precision":"year","title":"Eosinophilic granuloma of bone described by Lichtenstein and Jaffe","note":"Single-system Langerhans cell histiocytosis (bone, skin or one other organ)","from":"lch-single-system","refs":[]},{"group":"history","date":"1940","precision":"year","title":"Stewart and Treves describe lymphangiosarcoma after mastectomy","note":"Vascular tumours (angiosarcoma, epithelioid haemangioendothelioma, kaposiform haemangioendothelioma)","from":"vascular-tumours","refs":[]},{"group":"journal","date":"1940","precision":"year","title":"JNCI: Journal of the National Cancer Institute founded","note":"Oxford University Press","from":"jnci","refs":[]}]},"route":"/years/1940/","neighbours":{"year":[{"id":"1939","kind":"year","name":"1939 in oncology","route":"/years/1939/"},{"id":"1941","kind":"year","name":"1941 in oncology","route":"/years/1941/"}]}}