[Detection and characterization by ultrasonography of soft tissue foreign bodies].
BACKGROUND
Soft tissue foreign bodies are a frequent cause of consultation in emergency rooms. It is difficult to verify their existence since conventional radiology only detects radio opaque objects. Ultrasound can be a useful diagnostic procedure.


OBJECTIVE
To report our experience in the detection of soft tissue foreign bodies by ultrasound examination.


METHODS
The ultrasonographic appearance of vegetables, glass and plastic, metal, bone and stones was studied in gelatin preparations. In a second stage, 52 patients (27 male, aged 3 to 88 years old) were studied, in whom the presence of a soft tissue foreign body was confirmed surgically.


RESULTS
The mean error of the procedure for the assessment of foreign body size was 0.2 mm in vitro and 0.5 mm in vivo. The deepness and involved planes were correctly diagnosed in 96%, the number of fragments were diagnosed correctly in 94% of cases. The type of foreign body was identified correctly in 77% of cases and complications were detected in 100% of cases.


CONCLUSIONS
Ultrasound is a sensitive and accurate method for the detection of soft tissue foreign bodies.
Whittle
C
C
Departamento de Imágenes, Clínica Alemana de Santiago, Chile. cwhittle@alemana.cl
González
P
P
Horvath
E
E
Niedmann
J P
JP
Baldassare
G
G
Seguel
S
S
Mackinnon
J
J
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D005260:Female; D005547:Foreign Bodies / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D017695:Soft Tissue Injuries / Q000000981:diagnostic imaging; D014463:Ultrasonography