HARRISBURG, Pa. -

Pa. Sen. Mike Folmer announced Monday that he is preparing to undergo a procedure as part of his ongoing treatment for non-Hodgkin's lymphoma.

The procedure, known as a pericardial window, Folmer said, is a more permanent solution to remove accumulated fluid from his chest. It will be performed on Wednesday. Folmer is expected to be hospitalized for two to three days.

Fluid in Folmer's upper body, which initially led to his lymphoma diagnosis in late February, was previously drained from his chest, but additional fluid remains, Folmer said.

"My doctors are pleased with my progress, and I continue to remain optimistic about my diagnosis," said Folmer, who has been attending to Senate business as normal. "I have been humbled by the outpouring of support from my colleagues, constituents and friends."

In addition to the procedure on Wednesday, Folmer's treatment includes six chemotherapy treatments to kill the malignant cells in the lymph nodes. His second chemotherapy treatment is scheduled for the week of March 19.

Folmer, a Lebanon Republican, represents Pennsylvania's 48th Senate District, which is made up of Lebanon County and parts of Berks, Chester, Dauphin and Lancaster counties.