• Childhood Kidney Diseases
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• 제2권1호
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• pp.86-89
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• 1998

A bladder diverticulum occurs when the bladder mucosa herniates or protrudes through the muscular wall of the baldder. The majority of congenital bladder diverticula occurs in males. They are the most common in the region of the bladder base, most frequently in the region of the ureteral hiatus, in which case they are known as Hutch's diverticula. They can give rise to obstruction or reflux. We had experienced a case of bilateral Hutch's diverticulum associated with vesicoureterai reflux in a 23 month old male. Chief complaints were urinary frequency and dysuria. Voiding cystourogram and CT scan revealed large bilateral Hutch's diverticulum with bilateral vesiciureteral reflux grade VI. There was evidence of urinary infection. This patient was successfully treated by ureteroneocystostomy. We report this case with a brief review of related literatures.

• Childhood Kidney Diseases
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• 제19권1호
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• pp.8-13
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• 2015

Antenatal hydronephrosis (ANH) is one of the most common abnormal findings detected on prenatal ultrasound (US), and it has been reported in 1-5% of all pregnancies. The likelihood of significant postnatal pathologic abnormality in the urinary tract correlates with the degree of anterior-posterior diameter (APD) according to the gestational age. Detection of urologic anomalies prenatally permits fetal interventions that avoid complications in rare cases of bladder outlet obstruction with oligohydramnios even though their final benefits still remain controversial. There is no clear consensus on the extent and mode of postnatal imaging after a diagnosis of ANH. US is the mainstay of the postnatal evaluation and helps guide further testing with voiding cystourethrography (VCUG) and diuretic renography. Although most algorithms continue to recommend generous VCUG for identification of lower urinary tract anomalies, VCUG may be safely reserved for high grade ANH cases or any grade of ANH with dilated distal ureter without increasing the risk of urinary tract infection (UTI). There are conflicting studies about efficacy of postnatal prophylactic antibiotics. It still seems reasonable to consider use of a prophylactic antibiotic to prevent infant UTIs in high-risk populations, such as females and uncircumcised males with high grades of hydronephrosis, hydroureteronephrosis, or vesicouretral reflux.

• Childhood Kidney Diseases
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• 제22권2호
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• pp.75-80
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• 2018

Nutcracker syndrome is a phenomenon that the left renal vein (LRV) is pressed between the superior mesenteric artery (SMA) and the aorta. Clinical characteristics include gross or microscopic hematuria, orthostatic proteinuria, abdominal pain, and back pain. It occurs due to LRV squeezing caused by narrowed aortomesenteric angle. SMA syndrome is a disease that the third part of the duodenum is prone to intestinal obstruction by narrowed angle between the SMA and the abdominal aorta. Clinical symptoms include postprandial abdominal distension, epigastric pain, nausea, and vomiting. SMA syndrome and nutcracker syndrome have common features that result from narrowed aortomesenteric angle. However, it is very rare for both syndromes to occur simultaneously, so the two syndromes are regarded as separate diseases. This is a report on a case of nutcracker syndrome with SMA syndrome in a child who presented gross hematuria, recurrent abdominal pain and vomiting. To our knowledge, nutcracker syndrome simultaneous with SMA syndrome has not been previously reported in pediatric patient, especially with an exhibition of gross hematuria. This case suggests that the simultaneous presence of SMA syndrome with the same pathogenesis needs to be considered when nutcracker syndrome is suspected in pediatric patients with hematuria.

• Journal of Microbiology and Biotechnology
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• 제15권3호
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• pp.510-518
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• 2005

In this study, we investigated whether PLGA microspheres in combination with hyaluronic acid (HA) gel have appropriate properties as a bulking agent for urologic injection therapies and whether the implantation of PLGA microspheres and HA gel induces angiogenesis in the newly formed tissues. In order to investigate whether this bulking agent is injectable, this material was injected through 24-gauge needles into the subcutaneous dorsum of the mouse. The bulking agent was easily injected without needle obstruction. Histological analyses of the hybrid tissues at 2 weeks showed that host cells at the surrounding tissues migrated into the spaces between the implanted PLGA microspheres and formed tissue-like structures. An inflammatory response to the implants was mild at 2 weeks and diminished at 8 weeks. Importantly, extensive ingrowth of blood vessels was observed in the hybrid tissues formed by the injection of PLGA microspheres and HA, whereas blood vessels rarely formed in the hybrid tissues formed by the injection of PLGA microspheres only. The implant volume was conserved for almost the entire implantation period. Histological analyses of the distant organs of the bulking agent-implanted animals, such as the lungs, liver, heart, brain, kidney, and spleen, showed no evidence of the injected microsphere migration. These results show that PLGA microspheres in combination with HA possess the appropriate characteristics for a bulking agent for urologic injection therapies and induce extensive blood vessel formation in the hybrid tissues.

• 한국임상수의학회지
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• 제17권2호
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• pp.340-345
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• 2000

The purpose of the present study was to evaluate the possibility of application of pediatric hemodialysis system to dogs weighing less than 6 kg. Six healthy dogs (B .W, 3-6 kg) were used_ Experimental end-stage renal failure was induced by bilateral nephrectomy or bilateral ligation of ure-ters. Hemodialysis was performed when blood urea nitrogen (BUN) value increased over 90 mg/dl and every other day thereafter. Daily investigated parameters included clinical clinical signs such as vomiting, fecal appearance and activity and laboratory data such as PCV, WBC, RBC, BUN, creatinine, Ca, P, $Na^+ Cl^-and K^+$During hemodialysis treatment, BUN and creatinine values were measured hourly. Severe vomiting and inappetence were shown 2 days after infliction of kidney disorder and melena and mucous faces were observed 3 days. The signs were not corrected by hemodialysis treatment. Avel- age hemodialysis treatment time was $5.5 {\times} 0.7$,/TEX> hours until BUN value decreased to normal range. Abnor- mal hematological and electrolytes values were reduced within normal levels after hemodialysis treatments. The complications oft hemodialysis included vomiting, nausea, obstruction of intravascular catheter, tremor, seizure, temporary visual loss and continued decrease in PCV It is suggested that pediatric hemedialysis system can be applied to acute renal failure and acute toxicity. Further works on improvements in maintaining patency of catheter and in managing the complications of hemo- dialysis should be conducted.

• 동의생리병리학회지
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• 제20권6호
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• pp.1375-1387
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• 2006

Through abdominal diagnoses, deficiency and excess, and cold and heat of the eight principles for differentiating syndromes can be determined, pathogens such as fluid retention, dry stool, retention of undigested food, abdominal mass, blood stagnation, stagnation of Gi, deficiency of Kidney Yang, and, spermatorrhea can be identified, nature and stages of the symptoms can be understood and then pathogenesis analyzed. Abdominal diagnosis can be one of primary factors in deciding treatment, expecting prognosis and treatment effect, and choosing herbal prescriptions. Representative herbs for epigastric stuffiness/fullness are Radix Ginseng, Pericarpium Citri, etc; for fullness of epigastrium, Rhizoma Pinelliae, Pericarpium Citri, Rhizoma Rhei, etc.; for severely rigid epigastrium, Radix Glycyrrhizae, Radix Ginseng, etc.; for epigastric pain, Rhizoma Pinelliae, Pericarpium Citri, etc.; for epigastric fullness and rigidity, Rhizoma Coptidis, Radix Ginseng, etc.; for feeling of obstruction in the epigastirum, Radix Bupleuri, Radix Ginseng, etc.; for palpitation in the epigastrium, Radix Glycyrrhizae, Ramulus Cinnamomi, etc. It is essential to rightly diagnose through comprehensive analysis of the data gained by the four methods of diagnosis, and in doing this, further studies on how to utilize abdomen diagnosis for clinical practice.

• Childhood Kidney Diseases
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• 제25권2호
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• pp.112-116
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• 2021

Hyperammonemia is mainly caused by diseases related to liver failure. However, there are also non-hepatic causes of hyperammonemia, such as urinary tract infection (UTI) due to urease-producing organisms. Urease production by these bacteria induces a hydrolysis of urinary urea into ammonia that can cross the urothelial cell membrane and diffuse into blood vessels, leading to hyperammonemia. Delayed diagnosis and treatment of hyperammonemia can lead to lethal encephalopathy that can cause brain damage and life-threatening conditions. In the presence of obstructive uropathy, UTI by urease-producing bacteria can lead to more severe hyperammonemia due to enhanced resorption of ammonia into the systemic circulation. In this report, we present a case of acute severe hyperammonemic encephalopathy leading to brain death due to accumulation of ammonia in blood caused by Morganella morganii UTI in a 10-year-old girl with cloacal anomaly, causing obstructive uropathy even after multiple corrections.

• 한국임상수의학회지
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• 제22권4호
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• pp.357-364
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• 2005

We surveyed the incidence of urinary calculi for feeding period, urinary lesion, composition of calculi and changes of serum chemistry with Korean native castrated steers, which are growing until 26 through 31 months. Without showing any clinical signs such as urethral obstruction, hydronephrosis and strangury for all group, $37.8\%$ (34 out of 90) of Korean native steers carried urinary calculi in carcass. The incidence of urine calculi far different feeding stages from 26 to 31 months were observed as $13.3-60.0\%$er, no significant differences were detected. The distribution of calculi were kidney $(24.4\%)$, kidney and bladder $(10\%)$ and kidney, bladder and urine $(3.3\%)$. Congestion of urinary bladder was shown in $26.6\%$ of Korean native steers. Korean native steers with urinary calculi $(41.2\%)$ had more possibilities (P<0.05) to bring outbreaks of congestion of urinary bladder than those of without calculi $(17.8\%)$. The main composition of calculi were struvite (magnesium ammonium phosphate crystals), calcium phosphate, calcium carbonate, calcium oxalate, non-oxalate calcium, ammonia and phosphate. The distribution of urine pH was $71.7\%$(above pH 8.0), $12.2\%$ (between pH 7.0 and pH 8.0) and $16.6\%$ (under pH 7.0). Like shown in herbivores, most of the urine pH was distributed as alkaline urine. Serum creatinine was shown significant difference (P<0.05) according to incidence of calculi but other serum chemistry didn't show any difference in serum chemistry. These results suggest that feeding until 26 to 31 months in Korean native steers castrated at 6 months of the age elicits urinary calculi and congestion of urinary bladder, but not clinical abnormality. And adjustment of the dietary Can ratio to a level of 2:1 or greater during feeding period may reduce the possibility of incidence of urinary calculi in Korean native steers.

• Childhood Kidney Diseases
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• 제6권2호
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• pp.178-187
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• 2002

목적: 산전 초음파가 널리 이용되면서 태아기의 선천성 요로계의 이상이 발견되는 경우가 점차 증가하고 있다. 수신증의 대부분은 출생 후 1년 내에 자연스럽게 없어지는 생리적 수신증이지만 수술적 교정을 요하는 병적 수신증과의 감별이 쉽지 않다. 본 연구에서는 산전 수신증이 의심되는 환아에서 출생 후 수신증을 확진하여 산전 진단과의 연관성을 비교 분석하고, 산전 수신증의 원인과 자연경과를 이해하여 출생 후 수신증에 대한 대처에 도움을 주고자 본 연구를 시행하였다. 방법: 1994년 9월부터 2001년 8월까지 아주대학교 병원 산과에 등록되어 산전 초음파 검사상 태아 수신증이 의심되었던 환아 119명 중 출생후 실시한 신 초음파 검사에서 수신증이 확진된 91명(121 신단위)을 대상으로 수신증의 원인과 자연경과를 신 초음파 검사와 배설성 신주사 검사로 추적 관찰하였다. 결과: 산전 초음파 검사에서 수신증이 의심되었던 119명의 신생아 중 출생 후 수신증이 확진 되었던 환아는 91명으로 76%였다. 수신증의 원인으로 요관 신우 이행부 협착이 57례(47%)로 가장 많았으며 그 다음으로는 다낭성 이형성신이 12례(10%), 요관 방광 이행부 협착 5례(4%), 방광 요관 역류 5례(4%), 후부요도 판막 2례(2%)등의 눈이었으며 원인을 찾을 수 없었던 경우도 38례(31%)였다. 추적검사에서 47%가 수신증의 완전소식 혹은 호전소견을 보였으며 총 121개의 신 단위 중 10단위가 수술을 받았으며 진단에서 수술까지는 평균 7.2개원이 걸렸다. 결론: 산전 초음파로 발견된 수신증의 대부분은 출생후 수신증으로 확진되었으나 정상인 경우도 있었다. 산전 수신증의 원인으로 요관 신우 이행부 폐쇄가 가장 많았으며 대부분은 비폐색성 수신증이었고, 추적 검사에서 호전되는 경우가 많았다. 그러나 아직까지 신생아 수신증은 정확한 감별진단이 어렵기 때문에 신장기능의 보전을 위해서는 수신증의 정도에 따라 적절한 간격으로 지속적인 관찰을 하는 것이 필요할 것으로 사료된다.

• Childhood Kidney Diseases
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• 제3권2호
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• pp.180-186
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• 1999

목적 : 요로감염이 있을 경우 방광요관역류를 포함한 선천성 요로계 이상을 25-55%에서 발견할 수 있다. 이 중 방광요관역류는 8-52%이나 이러한 역류성 병변이 일차성 역류인지,선천성 기형과 동반되는 이차성 역류인지 구별하기 어렵고 역류 자체에 의해 기존의 선천성 병변은 무시되기 쉽다. 이에 저자들은 방광요관역류 여부와 관계없이 선천성 요로계 이상이 요로감염과 동반된 경우에 대하여 성별 연령별 빈도, 선천성 요로계 이상의 종류 및 방광요관역류와의 관련성 여부 등에 대해서 알아보고자 본 연구를 실시하였다. 대상 및 방법 : 1996년 3월부터 1998년 2월까지 삼성서울병원에 요로감염증으로 입원치료받은 환아로 신초음파검사 단독 또는 초음파검사 및 배뇨중 요도조영술검사(voiding cystourethrography)를 모두 시행하여 적어도 한 가지 이상의 방사선학적 검사를 시행하였던 65례를 그 대상으로 하였다. 59례에서 초음파검사를 시행하였고 배뇨중 방광요도조영술은 51례에서, $^{99m}Tc-DMSA$ scan은 45례에서 시행하였다. 결과 : 1) 방광요관역류 여부와 관계없이 선천성 요로계 이상이 요로감염과 동반된 경우는 요로감염환아 65례 중 9례(13.8%)로 남아 7명 여아 2명이었다. 2) 연령별 분포를 보면 1세 미만이 1명, 1-2세 5명, 3-5세 1명, 5세 이상 2명이었다. 3) 선천성 요로계 이상의 종류는 각각 양측이소성신, 방광요관이행부폐쇄, 다낭신, 방광신우이행 부협착, 방광신우이행부폐쇄 및 수신증, 후부요도판막, 방광격막, 요막관잔유물, hutch diverticula 등이었다. 4) 역류 이외의 선천성 요로계 이상 9례 중 배뇨중 방광요도조영술은 8례에서 시행되었고 이 중 4례에서 방광요관역류가 발견되었다. 5) 요배양 검사에서는 E. coli가 3례(33.4%)에서 동정되어 가장 많았다. 결론 : 본 연구는 선천성 요로계 이상을 방광요관역류 여부와 관계없이 고찰한 것으로 13.8%에서 관찰되었다. 연구 대상의 예가 적어서 그 결과를 단정짓기는 어려우나, 다른 요로계 기형도 적지않게 동반되는 것으로 관찰되는바 요로감염증과 연관된 역류 이외의 다른 기형의 중요성도 간과되어서는 안될 것으로 사료된다.