The Mortality Commission is one of the four mandatory commissions by the Spanish Royal Decree of Structure, Organization and Operation of Hospitals (RD 521/87). Therefore, the autopsy is a fundamental tool of quality control in hospitals, assessing diagnosis and treatment. Moreover, the President of the Mortality Commission is usually a pathologist. Finally, after an autopsy, it is highly recommended that the pathologist in charge of the procedure should send to the Mortality Commission a formulary disclosing the findings and the "degrees of correlation" with clinical data.