Pauly Shore is imploring folks to go get their bodies fully checked by a doctor ... because he said a full body scan revealed a tumor deep inside his body ... and he had to go under the knife to get it removed. Document Launch Doc Instagram / @paulyshore

The comedian just shared the health update on social media ... and he says he had a tumor growing on his pancreas.

Pauly says the tumor was only discovered after he went for a preventive full body scan three months ago ... he got a call a week after the scan notifying him of the abnormal mass. Gallery Launch Gallery Getty

Fortunately, Pauly says the tumor was benign and it might have been chilling there undetected for 15 to 20 years ... but he says his doc told him it was best to get the thing removed anyway ... so tha

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