1The Department of Internal Medicine, Mimihara General Hospital, 2The Department of Radiology ,Mimihara General Hospital, 3The Department of Surgery ,Mimihara General Hospital
ultrasonography, acute appendicitis
Twenty two patients with acute appendicitis confirmed by operation were examined by ultrasonography
for the period of 18 months from January 1981 to June 1982. The ultrasonic findings of acute appendicitis
is consisted with two components; 1) appendix was demonstrated as low echo area with double walls (appe
echo), 2) high level echo was surrounding the appendix under the peritoneum. In 18 cases, appendix could be demonstrated (82 percent) and in 16 cases high level echo around the
appendix was observed (73 percent). With surgical intervention, in 14 out of 16 patients accumlation of
omentum around the appendix was observed. Appe echo、could be divided in two types, hypoechoic wall type (10 cases) and echogenic wall type (8cases). In comparison with ultrasonic and surgical findings echogenic wall type seemed to indicate sever appendicitis than hypoechoic wall type. Therefore it was concluded that appe echo which seemed to indicate a swelling appendix and high level echo around the appendix were very helpful findings to diagnose acute appendicitis and echogenic wall type with high level echo should be performed appendectomy.