[Renal size in children with normal renal 99mTc-DMSA scan: building a nomogram with scintigraphic length].
OBJECTIVE
The aim of this study was to evaluate renal size in children with normal 99mTc-DMSA scans and to compare it with the published ultrasonographic values.


METHODS
Renal length of DMSA normal scans obtained from 253 children with history of urinary tract infection was measured. Regression analysis and length/age curves were done. Scintigraphic values were compared with published normal ultrasonographic length.


RESULTS
Regression algorithm for the whole group of patients was length (cm) = 6.1727 age (yr)0,1535. In the first year of life the equation was length (cm) = 0.1524 age (month) + 4.568, and in 1-16 yr children it was length (cm) = 0.2644 age (yr) + 6.319. There were no significant differences between both genders or in regards to reference ultrasonographic data.


CONCLUSIONS
Both renal 99mTc-DMSA scintigraphy and ultrasonography are useful tools for estimating renal size in children according age.
Lobo Sotomayor
G
G
Unidad de Medicina Nuclear, CDT Hospital San Juan de Dios, Santiago, Chile.
Ladrón de Guevara Hernández
D
D
Arnello Viveros
F
F
Pérez Rivera
A
A
Jiménez Jorquera
C
C
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007668:Kidney / Q000033:anatomy & histology* / Q000000981:diagnostic imaging*; D008297:Male; D011877:Radionuclide Imaging; D019275:Radiopharmaceuticals; D012016:Reference Values; D019783:Technetium Tc 99m Dimercaptosuccinic Acid; D014463:Ultrasonography
D019275:Radiopharmaceuticals; D019783:Technetium Tc 99m Dimercaptosuccinic Acid