Evaluation of Imaging Studies in Male Infants less than 3 Months after First Urinary Tract Infection

Jung, Jong Su; Kwon, Kyung Ho; Kim, Jong Sik; Lee, Young Ah; Kim, Hyun Jung; Lee, Gyun Woo

J Korean Soc Pediatr Nephrol > Volume 5(1); 2001 > Article

J Korean Soc Pediatr Nephrol 2001;5(1): 30-35.

3개월 이하의 남아에서 첫 요로 감염 후 방사선학적 검사의 평가

정종수, 권경호, 김종석, 이영아, 김현정, 이균우

¹부산 대동병원 소아과
²부산 대동병원 소아과
³부산 대동병원 소아과
⁴부산 대동병원 소아과
⁵부산 대동병원 소아과
⁶부산 대동병원 소아과

Evaluation of Imaging Studies in Male Infants less than 3 Months after First Urinary Tract Infection

Jong Su Jung, Kyung Ho Kwon, Jong Sik Kim, Young Ah Lee, Hyun Jung Kim, Gyun Woo Lee

¹Department of Pediatrics, Dae-dong Hospital
²Department of Pediatrics, Dae-dong Hospital
³Department of Pediatrics, Dae-dong Hospital
⁴Department of Pediatrics, Dae-dong Hospital
⁵Department of Pediatrics, Dae-dong Hospital
⁶Department of Pediatrics, Dae-dong Hospital

ABSTRACT

Purpose : To evaluate tile frequency of urinary tract anomalies in male neonates less than 3 months old who presented with urinary tract infection(UTI) and to evaluate a appropriate imaging approach after first UTI.
Materials and methods : During a period of 5 years from March 1994 to February 1999, 65 male infants less than 3months old(range: 4-92 days, mean: 43 days) with UTI were evaluated. Ultrasound(US) and Voiding cystourethrogram(VCUG) were done in 60 patients. Due to refusal and technological problem, 5 patients were missed. 99mTc-dimercaptosuccinic acid renal scan (99mTc-DMSA renal scan) was recommended to most patients but performed in 40 patients. Renal scan was performed at least 3 months later after urinary tract infection.
Results : Urinary tract anomalies were found in 26 of 65 infants. Twenty-six had vesicoureteral reflux(VUR), two had both VUR and double ureter, two had both U and posterior urethral valve. In patients with VUR, eight had renal scar or renal atrophies. In case of renal scar or atrophy, grades of VUR were III or above.
Conclusion : We suggest that US and VCUG should be routinely performed in infants(<3months)with first UTI. 99mTc-DMSA renal scan should be performed only when renal parenchymal damage was observed in US and VUR grade III or above in VCUG. (J. Korean Soc Pediatr Nephrol 5 : 30- 5, 2001)

Key words: Less than 3months male infants with UTI | Imaging studies