Department of Diagnostic Radiology, Sanggye Paik Hospital, Inje University Department of Diagnostic Radiology, Seoul Paik Hospital, Inje University1
ABSTRACT
PURPOSE : To determine the negative predictive findings of ultrasonography in intussusception reduction, wecompared the ultrasonographic findings in reduced and non-reduced groups in pediatric intussusception. MATERIAL &METHODS : A retrospective evaluation of the 35 non-reduced and 73 reduced cases of intussuception was performed.The diagnosis was made initially by ultrasonography and confirmed by barium enema using gastrografin between 1993and 1995. Ultrasonographic findings included thickness of outer colonic wall of the intussusception, diameter ofthe target, number of the lymph nodes, associated ascites and relapsed time after onset of symptoms. RESULTS : Thethickness of the outer wall of the intussuception were 4.0∼9.5 mm (mean : 6.08 ± 1.04) in reduced group and5.3∼11.6 mm (mean : 7.55 ± 1.16) in non-reduced group (p < 0.05). The diameter of the target were 18.9∼33.7 mm(mean : 27.0 ± 3.39) in reduced group and 19.1∼33.7 mm (mean : 25.8 ± 3.93) in non-reduced group (p > 0.05).Lymph adenopathy was seen in 65 (89%) cases in reduced group and 31 (89%) cases in non-reduced group, and averagenumber of lymph nodes were 1.46 and 1.58 respectively. Ascites was seen in 9 (12.3%) cases of reduced and 12(34.3%) in non-reduced group (p < 0.05). The onset of symptoms presented 24 hours or longer prior to the diagnosiswas 17 (23.3%) in reduced group and 17 (48.6%) in non-reduced group (p < 0.05). CONCLUSION : 7.55 mm or greaterouter wall of the intussusception and associated ascites seen in ultrasonography, and the onset of symptoms 24hours or longer prior to study can be used in negative predictive findings in intussusception reduction.
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