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Purpose: To evaluate the ultrasound (US) findings that can help differentiate lymphoid hyperplasia in the appendix from acute appendicitis. Materials and Methods: A total of 1230 patients (below 20 years old) suspected of having appendicitis received an appendectomy between November, 1999, and March, 2008, with US findings in 27 patients with pathologically proven lymphoid hyperplasia of the appendix. Of 167 patients that received an appendectomy from January, 2007, to December, 2007, 52 patients with acute appendicitis were retrospectively reviewed as a control group. Retrospective review of US images was performed by two radiologists who were blinded to the pathologic results. The review was based on 12 ultrasonographic criteria derived from reports on the diagnostic findings of the appendicitis. Results: Compared with acute appendicitis, lymphoid hyperplasia in appendix had a smaller diameter (7.14±1.22 mm vs 9.37±1.80 mm, p < 0.001) and less wall thickening (1.38±0.36 mm vs 1.74 ± 0.56 mm, p =0.001). Periappendicular inflammation (p < 0.001), intraluminal air (p = 0.006), round shape in transverse scan (p = 0.002), increased blood flow on color Doppler US (p = 0.03) were also different. Conclusions: US is a useful modality to differentiate lymphoid hyperplasia in the appendix from acute appendicitis.


Purpose: To evaluate the ultrasound (US) findings that can help differentiate lymphoid hyperplasia in the appendix from acute appendicitis. Materials and Methods: A total of 1230 patients (below 20 years old) suspected of having appendicitis received an appendectomy between November, 1999, and March, 2008, with US findings in 27 patients with pathologically proven lymphoid hyperplasia of the appendix. Of 167 patients that received an appendectomy from January, 2007, to December, 2007, 52 patients with acute appendicitis were retrospectively reviewed as a control group. Retrospective review of US images was performed by two radiologists who were blinded to the pathologic results. The review was based on 12 ultrasonographic criteria derived from reports on the diagnostic findings of the appendicitis. Results: Compared with acute appendicitis, lymphoid hyperplasia in appendix had a smaller diameter (7.14±1.22 mm vs 9.37±1.80 mm, p < 0.001) and less wall thickening (1.38±0.36 mm vs 1.74 ± 0.56 mm, p =0.001). Periappendicular inflammation (p < 0.001), intraluminal air (p = 0.006), round shape in transverse scan (p = 0.002), increased blood flow on color Doppler US (p = 0.03) were also different. Conclusions: US is a useful modality to differentiate lymphoid hyperplasia in the appendix from acute appendicitis.


목적: 급성 충수염과 충수에서의 림프구 증식증을 감별 하는데 도움이 되는 초음파 소견을 알아보고자 한다. 대상 및 방법: 1999년 12월부터 2008년 3월 사이 충수 절제술을 시행한 20세 이하의 총 1230명의 환아 중 병리 학적으로 충수에서의 림프구 증식증으로 확진된 27명의 환자를 실험군으로, 2007년 1월부터 12월 사이에 충수절 제술을 시행한 167명중, 급성 충수염으로 확진된 52명의 환자를 대조군으로 선정하여 두 군의 초음파소견을 후향 적으로 연구하였다. 두 명의 방사선전문의에 의해 평가되 었으며, 두 군 사이의 초음파 소견은 급성 충수염의 초음파 진단기준으로 이용되는 12개의 진단항목들을 기초로 하여 비교하였다. 결과: 급성 충수염과 비교하여 충수에서의 림프구 증식 증은 더 작은 최대 반경(7.14±1.22 mm vs 9.37±1.80 mm, p < 0.001)과 벽의 두께 (1.38±0.36 mm vs 1.74 ± 0.56 mm, p =0.001)를 보였으며, 충수주위 염증, 횡스 캔에서 둥근 모양, 컬러 도플러 초음파에서 증가된 혈류의 빈도가 급성충수염보다 더 적었으며, 내강내 공기의 빈도 는 더 많았다. 결론: 급성 충수염과 충수에서의 림프구 증식증의 감별 에 있어서 초음파 소견은 도움이 된다.