Shannen Doherty's Breast Cancer Diagnosis Leads to Bitter Lawsuit

The "90210" actress claims her business manager failed to pay the invoice for health insurance.
4:03 | 08/20/15

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Transcript for Shannen Doherty's Breast Cancer Diagnosis Leads to Bitter Lawsuit
actress shannen Doherty revealing she is battling breast cancer and the former "Beverly hills 90210" star blaming her managers claiming they didn't pay her health insurance and insisting a lapse in coverage kept her from seeing doctors. "Nightline" anchor juju Chang has more. Reporter: Call it life dramatically imitating art. I have a tumor in my breast. Reporter: This morning, actress shannen Doherty making headlines for her real-life health scare turned bitter lawsuit. What does it feel like? Like a hard little lump. Reporter: The "90210" revealing she has invasive breast cancer that spread to at least one lymph node during a period of time she says she was unknowingly uninsured and her business manager is to blame. The lawsuit filed against business management firm tanner maintain says they failed to pay the invoice for her health insurance which she had through the screen actors guild. She couldn't get insurance until the 2015 enrollment opened after which she did go to the doctor and found out that she had breast cancer and that it had spread during last year when she was uninsured. Reporter: The lawsuit also claiming had she been insured and able to visit her doctor the cancer could potentially have been stopped, thus obviating the need for future treatment including mastectomy and chemotherapy that plaintiff will likely have to suffer through now. I think the biggest challenge shannen will have in this lawsuit is linking her cancer, her need for treatment, any claims of delayed treatment to the actions of her business managers with respect to these insurance payments. Reporter: In a statement to ABC news tanner maintain says while the company is saddened to learn that miss Doherty is suffering from cancer, the claim that tanner maintain caused her to be uninsured, prevented her from seeking medical care or somehow contributed to her cancer is patently false. Overnight the actress' attorney telling us trust was violated here and we hope that the defendants will correct it in a responsible manner. For "Good morning America," juju Chang, ABC news, New York. Juju, thank you. ABC's Dan Abrams joins us now. Dan, what do you make of this lawsuit? Look, we all feel for shannen Doherty. But the notion that somehow the fact that her health care, she says, wasn't being paid led her not to go to the doctor and, therefore, she's holding them responsible, very, very tough legally to do. Now, we don't even know if they're going to concede that they were responsible for paying this. There's a lot of questions that still need to be answered but even if you assume everything she's saying is true which is they were supposed to pay it, they didn't pay it, as a result, I wasn't able to get back enrolled until 2015, even if all of that is true, it still is really hard to link legally her cancer -- The advanced stage of her cancer. Exactly with their actions. Is this arrangement typical in Hollywood where you have money managers dealing with insurance? You know, you also have lawyers, money managers, if you're a successful actor in Hollywood, you tend to get a terrible deal when you do these sorts of arrangements. Now, some of the lawyers out there and managers will disagree with me but tends to be a terrible deal which is they take a cut of all your money and they say you'll handle this for me and handle that for me when if you got people to do it individually it would be a lot cheaper but this is a very typical relationship that you see with successful actors and actresses in Hollywood, but the question becomes exactly what were think expected to do? What was their job? And the problem is a lot of the time it's not laid out in writing. It just becomes a kind of agreement which says, I'll give you 5% and you'll handle a lot of my stuff. Right. And the question is going to be, was this specifically articulated as one of the items that they were supposed to handle and did they not do it? We'll be watching it. I know you will, Dan. Back over to George.

This transcript has been automatically generated and may not be 100% accurate.

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