Senator Dianne Feinstein has been hospitalized in San Francisco with a case of shingles, KRON4 has confirmed.“I was diagnosed over the February recess with a case of shingles,” Sen. Feinstein told KRON4 through a spokesperson. “I have been hospitalized and am receiving treatment in San Francisco and expect to make a full recovery. I hope to return to the Senate later this month.”Feinstein, 89, recently announced she would not be seeking a new term in the upper house of Congress, but would see out the remaind …