Breast and Cervical Cancer Prevention and Treatment Improvement Act of 2011 - Amends titles XI and XIX (Medicaid) of the Social Security Act to: (1) eliminate funding limitations for the territories of Puerto Rico, the Virgin Islands, Guam, the Northern Mariana Islands, and American Samoa with respect to payments for medical assistance for certain individuals eligible for it only on the basis of being breast or cervical cancer patients; and (2) apply to such assistance a federal medical assistance percentage (FMAP) for the highest state.