No abstract available.
Anus, Imperforate* ; Perineum* ; Ultrasonography*

No abstract available.
Constriction, Pathologic* ; Diagnosis*

Although the ultrasonography is a useful imaging modality for evaluation of abdominal mass in an infant and child, CT has more advantages over te ultrasonography in assesssing anatomic detail, precise extent of tumor and differential diagnostic accuracy. The authors analyzed CT featurs of 85 cases of pathologically or clinicallyproven pediatric abdominal masses for recent 4.5 years at Keimyung University Dongsan Hospital. The reseults wereas follows: 1. The most common site was kidney (36 cases:42.4%), followed by nonrenal retroperitoneal masses(23cases:27.1%), hepatobiliary masses(15 cases:17.6%), gastrointestinal masses(9 cases: 10.6%), and genital massses(2cases: 2.3%) in order of frequency. 2. Hydronephrosis(17 cases:20%) and Wilms' tumor(17 cases:20%) were mostcommon and splenomegaly(8 cases:9.4%), neuroblastoma(5 cases: 5.9%), teratoma(4 cases:4.7%), rhabdomyosarcoma(4cases: 4.7%) were descending order of frequency. 3. The male to female ratio was 2;1, but female was predominantin teratoma, choledochal cyst and genital masses. Twenty three cases(27.1%) were under the age of one year. 4. Thediagnosis of hydronephrosis, assessment of its severity and localization of exact level of obstruction were easywith CT examination. 5. Characteristic CT features of Wilms' tumor were round or oval shaped, smooth marginated,large intrarenal mass with displaced or obstructed calyces, pseudocapsule and crescent sign; there were noevidence of retroperitoneal lymph node or contiguous extension, retrocrural lymph node enlargement, prevertebralmidline extension, or encasement of the aorta. 6. Typical CT findings of the neuroblastoma wre irregular shaped &marginated extrarenal mass with calcification frequently, accompained by retroperitoneal lymph node or contiguousextension, retrocrural lymph node enlargement, prevertebral midline extenstion and encasement of the aorta; therewere no evidence of pseudocapsule or crescent sign. 7. CT features of teratoma were characteristic, having atleast three or more of different tissue densities among fat, water, soft tissue and calcific densities. 8.Pathology and its extension of retroperitoneal space was demonstrated accurately by CT. 9. Mesenteric, omental andenteric cysts had similar CT appearance particularly very large cystic masses.
Aorta ; Child ; Choledochal Cyst ; Female ; Humans ; Hydronephrosis ; Infant ; Kidney ; Lymph Nodes ; Male ; Neuroblastoma ; Retroperitoneal Space ; Teratoma ; Ultrasonography ; Water ; Wilms Tumor

The pulmonary sequestration is rare congenital anomaly characterized by the presence of a part of lung tissuewhich is supplied by an aberrant systemic artery from the aorta or its branch and usually has no communicationwith the normal bronchial tree. The authors present 3 cases of intralobar pulmonary sequestration, studied by CTand /or US. Typical CT features of intralobar pulmonary sequestration are homogenous or unhomogeneous, relativelylow density lung mass near the diaphragm, having feeding artery from the aorta or branching vessels within themass during bolus injection or dynamic CT.
Aorta ; Arteries ; Bronchopulmonary Sequestration ; Diaphragm ; Lung ; Trees ; Ultrasonography

Necrotizing colitis associated with carcinoma of the colon, Known also as obstructive colitis, is a disordercharacterized by anulceration and inflammation of the colon proximal to an obstructive lesion, especiallycarcinoma of the rectosigmoid colon, and in rare instances, leads to actual gangrene of the colon. The authorsanalysed radiologic findings in four cases of necrotizing colitis associated with carcinoma of the colon. Bariumenema disclosed mucosal edema, nodular filling defects, irregularity of the colonic controur and typicalthumbprinting appearance of involved colon proximal to an obstructing carcinoma of the colon. The mechanism ofnecrotizing colitis was briefly reviewed.
Colitis ; Colon ; Edema ; Gangrene ; Inflammation

Although the ultlrasonography has been regarded as a main procedure in the diagnosis of bile duct andgallbladder diseases, a few reports concerning the ultrasonographic findings of biliary ascariasis appeared in theliterature. Seven cases of real-time ultrasonographic diagnosis of biliary ascariasis were made in our hospitalduring last 15 months. In six, the diagnosis was confirmed by surgery or radiographic examination. The resultswere as follows; 1. The characteristic long, thick, highly reflective echo without distal acoustic shadowing inthe extra and/or in tra-hepatic ducts were seen in all six proven cases. 2. The echogenic, nonshadowing images ofthe worms were seen as single stripe in five cases(containing a central longitudinal, anechoic tube, suggestingits digestive tract in three cases ) or multiple stripes in one case. But so-called coiled appearance or amorphousfragments were not seen in our cases. 3. Associated findings were as follows; mild to moderate dilatation of theextrahepatic duct in all six duct in 1 case, intrahepatic stone in 1 case, contracted gallbladder containingsingle stone in 1 case and evidence of cholecystitis in 4 cases. 4. One false positive diagnosis of ascariasis inthe gallbladder is considered due to reverberation artefact. No false negative was seen.
Acoustics ; Artifacts ; Ascariasis ; Bile Ducts ; Cholecystitis ; Diagnosis ; Dilatation ; Gallbladder ; Gastrointestinal Tract ; Shadowing (Histology)

Condyloma acuminatum, a benign disease caused by a filtrable virus, occurs predominantly in the perianal andgenital areas. The lesions are noninvasive but are subject to recurrence. In rare instances, a more aggresive formof this disease, known as "giant condlyloma acuminatum" or "Buschke-Lownestein tumor", occures. In this form,infiltration of the lesion into surrounding structures takes place. This tumor has been reported to occurprincipally in the genitourinary tract. The authors experienced a cases of giant condyloma acuminatum originatingfrom rectum in 67 years old male patient which recurred 3 months after electrofulguration.
Buschke-Lowenstein Tumor ; Humans ; Male ; Rectum ; Recurrence

Although the ultrasonography has been regarded as a important procedure in the diagnosis of intraabdominalabscess, there were relatively few papers concerning the ultrasonographic findings of periappendiceal abscess.Nineteen cases of surgically proven periappendiceal abscess caused by perforated appendicitis were studied byultrasonography at the Kyung Hee University Hospital during last 34 months. The results were as follows; 1.Diagnostic accuracy of the real-time ultrasonography was 94.7%(18/19). There were only one false positive and onefalse negative. 2. The location of abscesses were ; periappendiceal 68.4%(13/19), pelvic 21.0%(4/19), subhepatic5.3%(1/19) and subphrenic 5.3%(1/19) in order of frequency. 3. Variable echo-patterns of abscesses wereencountered. But irregular, thick walled, posteriorly reinforcing, echo-free or mixed echo-patterns were mostcommon.
Abscess ; Appendicitis ; Diagnosis ; Ultrasonography

In the unusual manifestation of right upper lobe collapse confusing with mediastinal or parenchymal mass, both alteration of the pulmonary vessels and shifting pattern of the collapsed lobe to the periphery on supine positionare the key to the diagnosis of it rather than mediastinal or parenchymal mass. The mechanisms of these unusual manifestation s are obscure, however lobar torsion and gravity factor are considered to be a main process. Authors have experienced 2 cases of unusual manifestations of right upper lobe collapse due to bronchogenic carcinomaduring resent 2 years in Kyung Hee University hospital, and prsent radiologic findings.
Carcinoma, Bronchogenic ; Diagnosis ; Gravitation

Congenital tuberculosis is an infection that is established in the fetus by hematogenous spread or by the aspiration or inhalation of infected amniotic fluid either before or during labor. The diagnosis can be confirmed only if both the tuberculous nature of the lesion and the antenatal origin of the infection can be proved. The authors analysed roentgen findings of two cases of pulmonary tuberculosis, thought to be congenital; 1. Diffuse distribution of nodular densities and some confluent densities were seen in the entire lungs in the inital film.The pulmonary markings were decreased in some degree. 2. Air bronchogram was noted. 3. Hepatosplenomegaly was associated.
Amniotic Fluid ; Diagnosis ; Female ; Fetus ; Inhalation ; Lung ; Tuberculosis ; Tuberculosis, Pulmonary