For once, I'm completely in agreement with a television network

From Newsday:

As you may be aware, Maura Tierney - a wonderful actress

and TPWFMA ("the perfect woman for me, apparently.”)

was sidelined over the summer with an undisclosed illness, later reported as breast cancer. Her treatment is on-going, so it's naturally impossible to continue on the show. "Parenthood" - as you know, based on the Steve Martin film of the same name - was a big entry for NBC this fall, then got pushed back to mid-season after Tierney's illness. Fate of the show at this point, naturally, is a little unclear; there's a bold-name cast attached (including Peter Krause, and others) so one wonders how long they will hold on. If the part is to be re-cast, a new name should likely surface shortly, if only to keep the production intact.

And as for the part where I'm in total agreement with a TV network...

"While we are saddened that Maura Tierney won't be able to continue in her current role in 'Parenthood,' our main concern is for her quick and full recovery. Our thoughts and best wishes are with her," NBC said in a statement.

Word up, National Broadcasting Company.