Tony Curtis Hospitalized -- Breathing Problems

7/13/2010 4:30 PM PDT

Tony Curtis Hospitalized -- Breathing Problems

TMZ has learned Tony Curtis has been hospitalized outside of Las Vegas since last week -- after experiencing breathing problems during a local appearance.

Sources close to the actor tell TMZ Tony -- who suffers from chronic obstructive pulmonary disease -- was at a Henderson, NV Costco on Wednesday debuting his latest artwork products when he began to have trouble breathing.

We're told Tony was taken to a local hospital ... where he's still holed up while doctors conduct tests.

Sources say Tony is in stable condition and will hopefully be released soon.