 This study entitled The Quantification of Breast Sensations Following Postmastectomy Breast Reconstruction will evaluate the recovery of sensation in the reconstructed as well as in the nonreconstructed breast. Touch, vibration, pain and temperature sensation will be objectively evaluated greater than 1 year following completion of reconstruction. Breast sensation following immediate, tissue expanderimplant breast reconstruction will be compared with that following immediate, autogenous tissue reconstruction. 