First and foremost, this was a retrospective study of medical records in which the quality of the information was inherently limited. The second limitation of our study is related to the interobserver variability, which is an issue even though all of the autopsies at our institution are performed by a resident pathologist and supervised by a senior pathologist, who also checks the histological analysis to prepare the final reports. Different observers can have different opinions; some studies have shown significant interobserver variability in about 15% to 35% of the autopsies analyzed. 4, 7 In addition, the accuracy of autopsy findings depends on the interest and skill of the pathologist.