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The cause of death of actress Loni Anderson , known for her starring role in "WKRP in Cincinnati," has been revealed.

In a death certificate obtained by TMZ , Anderson's cause of death was confirmed to be metastatic uterine leiomyosarcoma, with no other contributing factors listed.

According to the National Organization for Rare Disorders , metastatic uterine leiomyosarcoma "is an extremely rare form of cancer" which starts in the uterus and can spread to other parts of the body, most notably "the lungs and liver often causing life-threatening complications."

Anderson's longtime publicist confirmed to Fox News Digital the actress died on Aug. 3 at the age of 79. Anderson died at a Los Angeles hospital following a "pro

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