[Ultrasonography in the diagnosis and treatment of psoas abscess. Apropos of a study with 30 patients].

The abscess of psoas are more often secondary to a loco-regional cause. The authors report a series of 42 abscess of psoas in 30 patients during 3 years. It concerns 16 men and 14 women witch a mean age of 35 years. The abscess was secondary to a spondylodiscis in 25 patients and primary in 5 patients. The size of the abscess was upper 5 cm with a variable ultrasound structure: liquid in 33 cases, hypoechogenic in 9 cases. All patients underwent a percutaneous treatment guided by ultrasonography. A single or multiple evacuation puncture with 16 Gauge needle were performed for 40 abscess. Complementary percutaneous drainage with 14 french drain was used in 3 cases. In 2 other cases, the percutaneous drainage was used firstly. The bacteriological study of puncture liquid isolated the germ in 8 cases. Evaluation has been assessed in only 29 cases. The recovery was reached in 12 abscess on 15 which were treated by a single puncture. In 10 abscess on 13 treated by multiple puncture; and in 4 abscess an 5 managed by drainage. The results demonstrate the accuracy of single or multiple drainage puncture associated with adapted antibiotherapy in the management of abscess.