Pre-cancerous: warning sign or cause for panic?

Pre-cancerous: warning sign or cause for panic?

"It might be a spot, lump, bump or polyp you’ve found suspicious or bothersome enough to ask a doctor to have a look at. The doctor sends what she has excised for testing and tells you it’s “pre-cancerous”. But what exactly does that mean, and is it cause for alarm?"

Image Credit: By Nephron - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=9653559

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