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Just this week, production on the upcoming show Parenthood was halted as Maura Tierney was given time off for unspecific health reasons. Well, the issue has a face and it's a breast tumor which must be removed. Fortunately, the diagnosis has been described as 'very treatable' according to Tierney. The ER star remains cautiously optimistic according to her sister, but will not know the entire extent of her medical condition until the tumor is removed. Hopefully, it'll be benign. Good luck and positive thoughts towards her. Breast tumors are no joke and are best diagnosed in time. Click here for information on personal detection. The Parenthood is based on the 1989 epic amazing movie of the same name with the best Keanu Reeves speech ever.