小児の一過性水腎症例および間歇的水腎症例

TRANSIENT (REVERSIBLE) AND INTERMITTENT HYDRONEPHROSIS

　症例1は敗血症を伴う高度尿路感染にて部尿路拡張を呈した4カ月男児で腎瘻造設で解熱，以後の評価で尿の通過性良好なため腎瘻を抜去したが順調。症例2は頻回に繰り返す疝痛・嘔吐発作で受診した8歳女児で，非発作時は軽度左水腎症のみで利尿レノグラムでも発作は誘発されなかつたが，発作時左巨大水腎症と腹部腫瘤が証明され腎盂形成術で治癒。併せて利尿レノグラムとWhitakerテストの意義を中心に考察した。

Herein 2 types of unique hydronephrosis were reported. Case 1. A 4-month-old boy with urosepsis showed severe dilatation of left upper urinary tract and left nephrostomy was performed. After the control of urinary infection, nephrostomy was removed but urinary drainage and renal function wasnormalized. He has been doing well thereafter without urinary infection. Case 2. An 8-year-old girl suffer-ing from frequent attack of colicky pain and vomiting was referred to us. On IVP and CT scan her left kidney showed only slight dilatation. Diuretic renogram failed to manifest obstruction and colicky attack.