Ms. Redstone, who is trying to close the sale of her family’s Paramount media empire to Skydance, was diagnosed with thyroid cancer this spring.

Amidst navigating a momentous merger, Shari Redstone, the influential chair of Paramount Global, has been discreetly battling thyroid cancer while persistently pursuing the completion of a highly expected deal with Skydance Media.

Shari Redstone, chair of Paramount Global, has been diagnosed with thyroid cancer, a spokesperson for Redstone confirmed Thursday.