1. A medical image processing apparatus comprising: an abnormal shadow candidate detecting section for detecting an abnormal shadow candidate from a medical image in which an image of a subject is generated, by using a judging logic which performs judgment by using training data; a training data storing section for storing the training data which is used at a detection of the abnormal shadow candidate, so as to make the stored training data updatable; a displaying section for displaying the medical image and a detection result of the abnormal shadow candidate; an area designating section for designating an area to be registered as the training data on the medical image displayed on the displaying section; a data controlling section for having an image of the designated area stored in the training data storing section as the training data; and a logic correcting section for correcting the judging logic of the abnormal shadow candidate detecting section, based on the training data stored in the training data storing section.