The authers analyzed ultrasonographicaliy the total 22 cases of clonorchiasis verified by stool examination and skin test and operation at Busan National Uni'/ersity Hospital and St. Benedict Hospital for about 21 months from January 198 1 to September 1982.1. Clinical materials were consisted of 18 males an d 4 fe males who showed right upper quadrant pain in 20 cases (90.9%), being most common , and elevated phosphatase in 13 cases (59.1%) , eosinophilia in 10 cases (45.5%) , elevated SGOT in 10 cases (4 5.5%), elevated total bilirubin in 9 cases (4 1.0%), complication of hepatoma in 2 cases (9.1 %), and liver cirrhosis in 4 cases (18 .2%).2. On ultrasonogram , the gall bladder showed tense spherical shape of wall in 17 cases (77 .3%), mo re than 10cm in the longest diameter in 4 cases (1 8.2%), more than 3mm in the wall thickness in 9 cases (4 1.0%), and low level echogenicity with liquid-liquid level in the dependant part in 16 cases (72.7%).3. The main bile duct showed more than 4mm in diameter considered as normal or mod erate dilatation in 17 cases (77.3 %), 1-2mm in th e wall thickness , being most common , in 10 cases (45.5%), more than 2m m in 6 cases (2 7.3%), a nd intraluminallow level echogenicity in 14 cases (63.6%).4. The peripheral biliary duct showed short two paraliel echogenic lines indicating irregular dilatation of peripheral biliary duct in 20 cases (90.9%), echogenicity in dilated duct in 13 cases (59.1 %), and thickened wa ll a nd the stro ng ec hogen icity of wall in 16 cases (7 2 .7%).5. The gall stone was associated in 2 cases (9.1%), a nd the stone of biliary duct in 2 cases (9 .1%).

Ultrasongraphy is a very usef미 diagnostic modality for the evaluation of clinically suspicious abdominal masses in infants and children, especially in assessing their existence, size, location, origin and internal consistency Authors analyzed and present ultrasonographic findings of 92 pathologically and/or clinically proven pediatric abdominal masses that were studied and treated in Chonnam University Hospital during recent 4 yearsThe results were as follows 1. The most common originating site was kidney (26 cases: 28.3%), followed by gastrointestinal tract (21 cases 22.8%), genital organ (17 cases: 18. 5%), non-renal retroperitoneum (13 cases: 18.5%), hepatobilary tract (12 cases: 13.0%), and anterior abdominal wall (3 cases: 3.3%) in order of frequency 2. The most common mass was hydronephrosis (18 cases: 19.6%) Neuroblastoma (7 cases: 7.6%), hepatoblastoma, ovarian teratoma, periappendiceal abscess and abdominal tuberculosis (6 cases: 6.5%, respectively), Wilms tumor (5 cases: 5.4%) were next in order of frequency 3. The sex distribution is rather similar, that is, male 42 (45 .7%) and female 50 (54.3%), but characteristically choledochal cyst (2 cases) and genital mass (17 cases) were found only in females Considering age distribution, 78 cases (84.8%) 'N ere lound within the range 01 one to 15 years of age The rest, 14 cases (15.2%), were under th e age of one year 4. With ultrasonography, the diagnosis 01 hydronephrosis could be made easily in every case and we could evaluate its severity and leve l 01 obstruction with high accuracy 5. AII Wilms tumor were large, round or oval, sharply marginated and relatively hornogeneous solid masses 6. AII neuroblastomas were irregular shaped , poorly delined , heterogeneous solid masses Tumor calcilication and extension across the midline were noted in 6 cases (85 .7%) and 5 cases (71 .4%), respectively 7. AII periappendiceal abscesses had irregular thickened wall and posterior acoustic en hancement; 4 cases (66.7%) among th em we re mixed ec ho pattern and 2 cases (33.3%) echo Iree 8. Among the 6 abdominal tuberculoses, 2 were seen as irregularly defined solid masses, 1 as conglomeration 01 multiple hypoechoic nodulles and 3as mixed patterns 이 논문은 198 5 년 1 2 월 26 일에 접수하여 1986 년 1 월 31 일에 채택되었음.-92