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Swayze is currently undergoing chemotherapy – not radiation – and he has not lost his hair (which can sometimes happen as a result of chemo), the star's publicist, Annett Wolf, tells PEOPLE.
She added that, for the time being, there is no way to gauge how long the treatment is expected to last.
Furthermore, contrary to some reports, Swayze was not diagnosed in January (following a gastrointestinal ultrasound procedure), but far more recently.
In addition, she said, Swayze's daily routine has remained unchanged, and his doctors are extremely optimistic regarding his prognosis.
The good news, Wolf emphasized, is that the cancer has not spread.
