David Hess walked away from Major League Baseball in 2021 after doctors diagnosed him with cancer.

On Friday, the pitcher revealed that his battle against the disease is not over.

«The last two weeks have been a whirlwind for us with this cancer journey that seems to never end,» he posted on social media Friday.

Hess noted that he was diagnosed with a form of cancer known as angiosarcoma.

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David Hess of the Baltimore Orioles throws during the first inning against the San Diego Padres at Petco Park on July 29, 2019 in San Diego. (Denis Poroy/Getty Images)

«We discovered that inside my tumor there was [a] a very rare and very aggressive type of cancer called angiosarcoma. Along with that discovery, there have been pulmonary nodules that we’re still not sure what to do about.»

The 29-year-old said he will undergo surgery next week to biopsy the nodules. Doctors will perform a separate procedure to remove the tumor.

WHITE SOX’S LIAM HENDRIKS DOMINATES IN FIRST MATCH SINCE CANCER FREE

Hess will also undergo chemotherapy.

«I will fight like hell and do whatever it takes for a cancer free prognosis at some point,» he wrote in a social media post.

Chicago White Sox pitcher Liam Hendriks and his wife Kristi are among the donors who have contributed to an online fundraiser in support of Hess and his wife Devin.

Hendriks was diagnosed with non-Hodgkin lymphoma in 2022. He rang the «victory bell» at his last chemotherapy session on April 5.

David Hess throws during a game

David Hess of the Miami Marlins throws against the Washington Nationals at Nationals Park on July 19, 2021 in Washington, DC (Mitchell Layton/Getty Images)

Hess was diagnosed with a rare form of cancer known as a germ cell tumor, which doctors discovered shortly after the 2021 baseball season. He underwent treatment and was cleared to return to normal activity in early 2022.

Last February, he reported to spring training with the Tampa Bay Rays before pitching in the minor leagues at the Triple-A level. He finished the minor league season with a 2-1 record and a 13.06 ERA in eight relief appearances.

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Hess has a 6-22 career record with a 6.25 ERA. Aside from his time in the Rays organization, Hess spent three seasons with the Baltimore Orioles and had one season with the Miami Marlins.