MITCHELSON, LISA A., of Hingham, Vice President, Portfolio Management, State Street Research Realty Advisors, Boston, died on October 20th, 2004 of pancreatic cancer. She was 42.A graduate of Notre Dame Academy, Hingham, she attended Regis College, Weston and received her B.S. in Finance from Northeastern University, Boston.She is survived by her parents, David and Ann Mitchelson, her sister Susan Bradley and husband Mark; her sister Sarah Vitulano and husband Scott and her two nieces, Katherine Bradley and Alex Vitulano, all of Hingham. She was the granddaughter of the late Harry and Eleanor Mitchelson of Quincy and Gerard and Agnes Duffly of Hingham.She was also dearly loved by her family and friends including aunts and uncles Thomas and Frances Duffly of Boston, Maureen and Brendan Joyce of East Dennis, Kathy and Fred Budreski of Brewster, Paul Mitchelson of Quincy, Doris Evans of Hingham; Richard and Catherine Evans, Julie Mellgren and cousins Kathleen Joyce, Mark Budreski and wife Hannah, Jonathan Budreski and Ann Budreski.A Memorial Celebration of Lisa's life will be held on Sunday, November 14th, 2004 at 2:00 PM at Old Derby Academy, 34 Main St., Hingham. The interment is to be private.In lieu of flowers, contributions may be made in Lisa's name to Dana Farber Cancer Institute, 44 Binney St., Boston, MA 02114 or on line at dfci.org.