{"entity":{"id":"1894","kind":"year","name":"1894 in oncology","aka":["1894"],"tldr":"Everything OnCo dates to 1894: 2 entries, 2 landmarks. 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":"2 dated entries in OnCo fall in 1894: 2 landmarks.\n\nOf those, 2 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":["1892","1896"],"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":1894,"events":[{"group":"history","date":"1894","precision":"year","title":"Ballance removes an acoustic neuroma","note":"Vestibular schwannoma (acoustic neuroma). Among the first successful removals of a cerebellopontine angle tumour.","from":"vestibular-schwannoma","refs":[]},{"group":"history","date":"1894","precision":"year","title":"Halsted radical mastectomy","note":"Breast cancer (all types). The standard operation for seventy years.","from":"breast-cancer","refs":[]}]},"route":"/years/1894/","neighbours":{"year":[{"id":"1892","kind":"year","name":"1892 in oncology","route":"/years/1892/"},{"id":"1896","kind":"year","name":"1896 in oncology","route":"/years/1896/"}]}}