Amale patient, 50 years old, was hospitalized in our department because of repeated vague pain under the right rib for more than 3 months. Two weeks prior to his hospitalization the pain became severe accompanied by fever. The right subcostal vague pain and discomfort occurred 3 months before admission, with no radiating pain elsewhere, no vomiting, no diarrhea or jaundice but with chills and pyrexia. In the aftoon the fever intensified, with a body temperature of about 38.5℃. There was the vague pain and discomfort under the right rib, which was paroxysmally intensified.