J Korean Radiol Soc.  1985 Aug;21(4):650-660. 10.3348/jkrs.1985.21.4.650.

Computed tomographic findings of the pediatric abdominal masses

• Woo SK
• Kim OB
• Suh SJ

• KMID: 2462443
• DOI: http://doi.org/10.3348/jkrs.1985.21.4.650

Abstract

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.

MeSH Terms

Aorta
Child
Choledochal Cyst
Female
Humans
Hydronephrosis
Infant
Kidney
Lymph Nodes
Male
Neuroblastoma
Retroperitoneal Space
Teratoma
Ultrasonography
Water
Wilms Tumor
Water