• Journal of Korean Neurosurgical Society
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• 제66권2호
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• pp.155-161
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• 2023

Objective : To analyze the anatomical location of the ureter in relation to lateral lumbar interbody fusion and evaluate the potential risk of ureteral injury. Methods : One hundred eight patients who performed contrast-enhanced computed tomographic scans were enrolled in this study. The location of the ureter from L2-L3 to L4-L5 was evaluated. The distances between the ureter and psoas muscle, intervertebral disc, and retroperitoneal vessels were also recorded bilaterally. Results : Over 30% of the ureters were close to the working corridor of extreme lumbar interbody fusion at L2-L3. Most of the ureters were close to working corridor of oblique lumbar interbody fusion, especially at L4-L5. The distance from the ureter to the great vessels on the left side was significantly narrowing from L2-L3 to L4-L5 (28.8±9.5 mm, 22.0±8.0 mm, 15.5±8.4 mm), and it was significantly larger than that on the right side (12.3±6.1 mm, 7.4±5.7 mm, 5.4±4.4 mm). Conclusion : Our findings indicate that the location of the ureter varies widely among individuals. To avoid unexpected damage to the ureter, it is imperative to directly visualize it and verify the ureter is not in the surgical pathway during lateral lumbar interbody fusion.

• 한국임상수의학회지
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• 제17권1호
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• pp.243-246
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• 2000

A 3-year old female Poodle dog was presented with a history of anorexia, vomiting, abdominal pain and depression for 2 days. After physical and blood examination, excretory urogram(EU) and ultrasonography of the abjomen were conducted. On radiographs and ultrasonographs, dilation of diverticulum, sinus, proximal ureter of right kidney and mild dilation of left renal medullar were found. And there was some leakage of contrast agent in the proximal ureter area of right kidney. So this was diagnosed as a rupture of right proximal ureter. This dog was undertaken a surgery of nephrectomy of right kidney. On surgery, dilation of right kidney and hemorrhage, adhesion were found at the proximal ureter and some calculi were also found in the pelvis of right kidney. There were no complications after surgery.

• 한국임상수의학회지
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• 제23권3호
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• pp.267-271
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• 2006

The present study was performed to clarity the effect of hemodialysis(HD) on acute renal failure induced by bilateral ligation of the ureter. HB was applied on 48 hours(1st HD) and 72 hours(2nd HD) after ligation of the ureter, respectively. Clinical signs including nausea, vomiting, diarrhea and depression were observed in all cases(6 heads), however, those symptoms were much improved after HD. Hematological values including WBC, PCV and PLT were increased after ligation of the ureter, however, those values were decreased by HD without significance, compared with those of before HD. In addition, serum BUN, creatinine, Ca and P levels were increased after ligation of the ureter, however, BUN(p<0.05), creatinine(p<0.05) and P(p<0.05) were significantly decreased by HD, compared with before HD, respectively. Considering above findings, it was thought that HD was effective for improvement of clinical symptoms of dogs with induced acute renal failure.

• 한국수정란이식학회지
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• 제30권3호
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• pp.261-263
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• 2015

A 10-year-old spayed female Yorkshire Terrier visited for a physical checkup. The bitch had a history of ovariohysterectomy for treatment of pyometra a year ago. On physical examination, the dog was bright and alert. Complete blood counts, serum biochemistry and blood gas analysis results did not show any deviations within normal ranges. Radiographic and ultrasonographic examinations revealed unilateral hydronephrosis and hydroureter of the right kidney and ureter, and obstruction of the distal ureter was observed. On the basis of these results, nephroureterectomy was performed. During the operation, the adhesion of the distal ureter and surrounding tissue cells were observed without the evidence of the ureteral ligation. The distal ureteral obstruction was presumed to be adhesion caused by fibrous tissue formation between ureter and retained broad ligament, or incompletely removed blood clots following ovariohysterectomy. This case report describes the occurrence of hydroureteronephrosis caused by adhesion of the distal ureter following ovariohysterectomy in a bitch.

• Anatomy and Cell Biology
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• 제57권3호
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• pp.476-480
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• 2024

Present case report describes a case of bifid ureter arising directly from separate calyces and renal pelvis of the kidney. Incomplete ureter duplication on the left side in a 78-year-old male cadaver was found during an anatomy class. These ureters converged in a Y-shaped pattern just above the level of the anterior superior iliac spine. In the coronal section of the kidney, the anterior ureter arose from a renal pelvis that was divided into two major calyces in the lower two-thirds of the kidney. On the other hand, the posterior ureter was directly connected to a major calyx in the upper third of the kidney, without the formation of a renal pelvis. This anatomical variation has implications for diagnostic approaches, especially in the use of imaging techniques by urologists for the insertion of stents in the treatment of phyelonephritis.

• The Korean Journal of Physiology and Pharmacology
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• 제15권1호
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• pp.37-41
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• 2011

Interstitial cells of Cajal (ICC) evoke pacemaker activities in many tissues. The purpose of this study was to investigate the relationship between interstitial cell and pacemaker activity in the human ureter through the recording of spontaneous contractions. Spontaneous contractions of eight circular and longitudinal smooth muscle strips of the human ureter to acetylcholine (ACh) and/or norepinephrine (NE) were observed. Human ureteral strips were divided into proximal and distal groups, and each group was subdivided into circular and longitudinal groups. The proximal group showed spontaneous activities of 3~4 times within 5 minutes in the longitudinal group. ACh ($10^{-4}\;M$) augmented the frequency of the spontaneous contractions. The cumulative application of NE also augmented the frequency in a dose-dependent manner. The effects of NE application were inhibited by concomitant application of $10^{-5}\;M$ glibenclamide. Receptor tyrosine kinase (c-kit) staining revealed abundant ICCs only in proximal tissues. Therefore, spontaneous contractions of the human ureter might be modulated by ICC in the proximal region, and the actions might be related with the activation of cholinergic and/or adrenergic system mediated by a glibenclamide-sensitive pathway.

• 대한세포병리학회지
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• 제13권1호
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• pp.38-41
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• 2002

Localized amyloidosis of the ureter is rare and clinically confused with neoplasm. We describe a case of localized amyloidosis of the ureter in which the presence of amyloid was detected in ureteral washing cytology. A 75-year-old female presented with gross hematuria. Abdominal CT and retrograde pyelography revealed hydronephrosis and hydroureter on the left side with abrupt narrowing of the distal ureter. Ureteral washing cytology yielded a hypocellular smear with many irregular clumps of amorphous, extracellar, waxy material. Biopsy sections demonstrated submucosal deposits of eosinophilic amorphous material which gave characteristic apple green birefringence with Congo-red stain under the polarized light. Familarity with the cytologic features of amyloid is helpful for preoperative diagnosis and proper treatment.

• 한국임상수의학회지
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• 제31권2호
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• pp.137-140
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• 2014

말티즈(증례1)와 라브라도 레트리버(증례2)가 요실금 증상으로 내원하였다. 전신상태는 양호하였으며, 혈액혈청검사 및 방사선검사상에서 이상소견은 나타나지 않았다. 증례 1에서는 투시검사, 증례2에서는 컴퓨터 단층촬영을 통해 배설 요로조영검사를 실시하였다. 증례1은 우측 강외성 이소성 요관으로, 증례2는 양측성 강내성 이소성 요관으로 진단되었다. 각각의 증례는 neoureterocytostomy (증례1)와 neoureterostomy (증례2)를 실시하였다. 술후, 3일동안 요관 카테터를 장착하였다. 술후 요실금 증상은 개선되었으며, 다른 임상증상은 나타나지 않았다. 개의 이소성 요관 형태에 따른 적절한 수술법을 통해 이소성 요관을 효과적으로 치료할 수 있었다.

• Childhood Kidney Diseases
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• 제16권1호
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• pp.32-37
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• 2012

목적: 본 연구는 방광요관역류를 보이는 소아에서 신초음파 이상소견에 대해 알아보고자 하였다. 방법: 2000년 1월부터 2010년 12월까지 일산병원 소아청소년과에 내원하여 요로감염증으로 입원한 후 배뇨성 방광요도조영술을 시행하여 방광요관역류를 진단받은 83명의 소아를 대상으로 총 166 신단위를 후향적으로 분석하였다. 결과: 대상 소아 중 1세 미만의 평균 나이는 $3.1{\pm}2.56$개월이었고, 1세 이상의 평균 나이는 $58.9{\pm}43.01$개월이었다. 신초음파 이상소견을 보이는 신단위에서 방광요관역류가 있는 경우는 73.9%였고, 신초음파 정상소견을 보이는 신단위에서 방광요관역류가 있는 경우는 58.7%였으며 이는 통계적으로 유의한 차이를 보였다($P$=0.049). 로지스틱 회귀분석에서 신초음파 이상소견이 있을 경우 방광요관역류가 있을 확률은 약 2배 증가하였다. 방광요관역류가 있는 신단위에서 신초음파 정상소견을 보이는 경우는 52.8%, 피질음영증가 16.7%, 수신증 17.6%, 요관확장 8.3%, 수신증을 동반한 요관확장 1.9% 등이었다. 이 중 수신증(82.6%), 요관확장(100%), 중복요관(66.6%), 손상된 위축신(100 %)이 있는 경우 방광요관역류의 빈도가 상대적으로 높았다. 결론: 방광요관역류가 있는 신단위에서 신초음파 이상소견으로 방광요관역류의 중증도를 예측하는 것은 가능하지 않으나 방광요관역류의 존재를 예측하는 것은 가능하다. 그러므로 수신증, 요관확장 같은 신초음파 이상소견이 있을 시, 배뇨성 방광요도조영술의 시행이 필요할 것이다.

• Journal of Trauma and Injury
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• 제37권3호
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• pp.243-246
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• 2024

Traumatic ureteral injuries account for fewer than 1% of traumatic urologic injuries, and those caused by blunt trauma are even rarer than those caused by penetrating trauma. The symptoms associated with ureteral injury may be subtle, with or without hematuria, making it difficult to diagnose. We report the case of a 31-year-old man with a delayed diagnosis of proximal ureter injury after abdominal blunt trauma sustained in a motorcycle traffic accident. The patient underwent emergency laparotomy on admission for liver injury, mesenteric injury, and resultant hemoperitoneum. On postoperative day 6, he underwent angioembolization for suspected remnant intra-abdominal bleeding. Persistent symptoms of flank pain and leukocytosis led to follow-up imaging studies that revealed proximal ureter injury, and the patient underwent unilateral nephrectomy. This case stresses the importance of clinical suspicion for genitourinary injuries in the presence of abdominal trauma.