Diagnosis of pyogenic abscesses by ultrasound.

Pyogenic infections are common in tropical countries and draining pus is one of the most frequent surgical operations all over the developing world. While superficial abscesses are easily detectable by clinical means the diagnosis of deeper abscesses in muscles, joints, parenchymatous organs and body cavities is frequently difficult or even impossible. In those situations B-mode ultrasound represents a valuable diagnostic tool. Furthermore, diagnosis may be confirmed or defined by ultrasound guided needle aspiration and ultrasound-guided drainage. Those measures may save surgical interventions and cost. Based on our experience with more than 3820 ultrasound examinations in 2746 patients of Northern Zaire sonographic characteristics of pyogenic abscesses are defined. Clinical examples of pyogenic affections with the corresponding ultrasound morphology are presented.