[Episcopal News Service] Episcopal Diocese of Massachusetts Thomas Shaw underwent surgery May 17 to remove a mass on his brain that was discovered following tests conducted a day earlier.

A series of updates posted on the diocesan website confirmed that the surgery went well, with no complications, and that Shaw moved out of the intensive care unit on May 18 and “was up and walking.”

Shaw offered gratitude “for the prayers for him, for his Society of St. John the Evangelist community and for the diocese, and asks for continued prayers.”

The Rev. Canon Mally Lloyd, canon to the ordinary, wrote that more will be known “in a week or so” as to whether any further treatment is necessary.

“Bishop Tom and all of us feel the unexpectedness of this, but please know that he has confidence in his doctors and was well prepared for the surgery,” wrote Lloyd, who spent time with the bishop pre-surgery at the hospital and said he “was in good spirits, was engaged with the ongoing matters of diocesan life and, as always, his faith and confidence were contagious.”

In January Shaw, 67, called for the election of a bishop coadjutor in April 2014 to succeed him when he retires. The diocese anticipates ordaining and consecrating the coadjutor in the fall of 2014 and Shaw said he would spend time working with the new bishop before he retires. That date had not been determined at the time of the announcement. Shaw is in his 19^th year as bishop.