Barry Watson, former star of WB's hit show "7th Heaven," has been diagnosed with Hodgkin's disease.
The 28-year-actor played eldest son Matt Camden on the series.
"He begins treatment this week, and both he and his doctors are extremely optimistic about a full recovery," Watson's publicist, Robin Baum, said in a statement Wednesday.
No other details were released about his condition or where he would receive treatment for the cancer of the lymph system.
The season finale, Watson's last appearance as a regular on the "7th Heaven," aired Monday. The episode centered on his character marrying his sweetheart, Sarah (played by Sarah Danielle Madison).
An official with Spelling Television, which produces the show, said a decision as to whether Watson would return for guest appearances next season has not been made.