The governor made the announcement on Saturday night.
"Friends - I've got a tumor on my left kidney. The prognosis is very good and I'm profoundly grateful to my doctors for detecting the tumor early," Murphy said in a tweet.
"Over 50,000 New Jerseyans will hear the words "you have cancer" this year, so I'm far from alone here. It's a situation that far too many families find themselves in. That's why we're fighting for them each and every day," Murphy added.
The governor will "undergo a partial nephrectomy in early March" to have the tumor removed.
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