Dear Doctor: A cancer starting in finger sweat glands affects just 1 in 10 million — and it's linked to HPV

Dear Doctor Roach: Do you know anything about aggressive digital papillary adenocarcinoma? My 39-year-old nephew was just diagnosed, and his parents are searching for answers. He’s getting scans to determine whether they should amputate his finger.

As far as we know, it hasn’t metastasized.