Thanks to Christine who alerted me to this. Apparently it was on the First Things blog (I missed it). Please pray for Fr Richard:
A Personal Note
I cannot begin to respond to the deluge of assurances of prayer and concern about my health. Please be assured that I am grateful and count mightily on being remembered by you before the Throne of Grace. Or, as Catholics are wont to say, on your storming the gates of heaven. The nature of the cancer is beginning to come into clearer focus, and I hope to have more details in short order. Meanwhile, I will, please God, continue to be as engaged as possible in the work of First Things and other apostolates, even as I am compelled by grace to know more deeply our solidarity within the Body of Christ.