Maura Tierney drops out of 'Parenthood'

Maura Tierney has dropped out of NBC's Parenthood to undergo further cancer treatments.

The 44-year-old actress revealed earlier this year that a tumour had been discovered in her breast. NBC pushed the series back to midseason as a result.

However, Tierney has now pulled out of the drama because the production schedule would interfere with her treatments.

A spokesperson for the star confirmed yesterday: "Ms. Tierney and her doctors remain confident that the outcome of her treatments will be positive.

"She is deeply disappointed that she will not be able to rejoin such a highly respected, talented, fun and funny group of actors and wishes to thank Jason Katims and NBC for their patience and support."