This article is presented with the purpose of giving a review of 111. cases of subphrenic abscess, together with a résumé of the subject. The material was collected from 21,430 case records of patients admitted to the Jewish Hospital from 1916 to 1935 inclusive. The experience at this hospital with the extraperitoneal approach to a subphrenic abscess, with 6 deaths in 71 cases, or a mortality of 8.5 per cent, has encouraged me to present this communication, as these figures are considerably lower than those generally reported. In the twenty years that this procedure has been intermittently employed, a method of approach has been evolved which in many respects is similar to the one recently suggested by Ochsner and Graves.1 There are, however, some technical differences in the procedure, detailed toward the end of this paper, which may help to simplify the approach. The relatively good operative results obtained