OBJECTIVE: To review clinical ethics consultations at a tertiary care academic medical center. METHODS: We retrospectively reviewed all ethics consultations (and associated patient medical records) conducted at the Mayo Clinic in Rochester, Minn, between April 6, 1995, and December 31, 2005. RESULTS: Of the 255 consultations, 101 (40%) reviewed intensive care unit care, 103 (40%) involved patients who died during hospitalization, and 174 (68%) were requested by physicians. The most common primary diagnoess of the patients involved were malignancy (18%, n=47), neurologic disease (18%, n=47), and cardiovascular disease (17%, n=43). Most cases involved multiple issues: patient competency and decision-making capacity (82%, n=208), staff member disagreement with care plans (76%, n=195), end-of-the and quality-of-life issues (60%, n=154), and goals of care and futility (54%, n=138). Witholding or withdrawilng measures was the focus of 182 (82%) of the consultations. We also identified previously published reports of ethics consultations and compared the findings of those reports with ours. CONCLUSIONS: Despite advances in medicine, the nature of ethical dilemmas remains relatively unchanged. Issues of communication, family conflict, and futility continue to give rise to ethical quandaries. © 2007 Mayo Foundation for Medical Education and Research.