• Journal of Veterinary Clinics
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• v.36 no.3
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• pp.176-179
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• 2019

A giant prostatic urethral calculus has not been previously reported in dogs and should be distinguished from prostatic calculus. A 7-year-old castrated male Maltese dog with a 2-month history of relapsing hematuria and urinary incontinence with slowly progressing paraphimosis was referred. On abdominal radiography and ultrasonography, there was a giant calculus in the region of prostate or urethra, one left ureteral calculus, one urinary bladder calculus, and two penile urethral calculi. On computed tomography for evaluating the accurate location and planning the surgical approach, the giant calculus was located at the prostatic urethra. The calculi in urinary bladder, prostatic and penile urethra were surgically removed. These calculi were mixed-type of calcium oxalate monohydrate, struvite and calcium phosphate carbonate. On the basis of the urolith analysis and urine bacterial culture results, antibiotics and prescription diet were adjusted. At the 3-month follow-up, there were no clinical sings but paraphimosis was still remained, and ultrasonography revealed newly-formed, small urethral calculi at the prostatic urethra. This is the first report to describe the case of a canine giant prostatic urethral calculus and its clinical signs, diagnostic imaging findings, treatment, and outcome. CT may be useful to assess the accurate location and surgical approach for such calculi.

• Journal of the korean veterinary medical association
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• v.18 no.9
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• pp.66-69
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• 1982

• Childhood Kidney Diseases
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• v.17 no.2
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• pp.117-121
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• 2013

Urinary obstructions from ureteral calculi are one of the causes of postrenal acute kidney injury (AKI). Here we present a case of AKI caused by a 4 mm ureteral calculus with postobstructive diuresis following the spontaneous passage of the calculus. A 13-year-old girl who underwent nephrectomy for the removal of a neuroblastoma eight years previously, visited our institution because anuria had developed over the preceding five days. The serum creatinine level was elevated at 13.4 mg/dL. Radiological examinations showed the right solitary kidney with moderate hydronephrosis and a 4 mm calculus in the upper right ureter. The patient immediately underwent hemodialysis. After the ureteral calculus was passed spontaneously on day 2 of hospitalization, urinary output increased to more than 5,200 mL per day. Intravenous fluid replacement with careful monitoring of weight, intake, output, and serum and urine electrolytes was performed. On day 5 of hospitalization, the patient's condition stabilized.

• Journal of Veterinary Clinics
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• v.30 no.6
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• pp.503-505
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• 2013

A cross breed dog (6-year-old, 6 kg, intact male) was referred with hematuria. The dog had been treated for years owing to the urinary bladder calculi. On abdominal radiography, prostatic calculus was demonstrated in the prostatic area. In addition, ultrasonography and computed tomography (CT) scan would confirm that the part of calculus protruded within the prostatic urethra. The patient underwent a prostatolithotomy and traumatic prostatic urethra was carefully sutured and the omentum was filled with the prostate lumen. A crystallographic analysis of the stone showed 80% magnesium ammonium phosphate (struvite) and 20% carbonate apatite. The leakage of the urine was not observed post-operation and the hematuria improved and there was no specific problem at the 6 months follow-up.

• Journal of Veterinary Clinics
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• v.19 no.2
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• pp.272-275
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• 2002

A retrospective analysis was performed with 30 cases of canine urolithiasis presented in the period between January and December 2001 The miniature schnauzer (6 cases), maltese (5 cases) and Shih Tzu (4 cases) had higher incidences than other breeds. Canine urolithiasis occurred from one year till 12 years, but the most prevalent age was 3 years. Urinary calculi occurred more often in males (63%) than females. The most prevalent anatomic locations of calculi were urinary bladder (8 of 22 cases) and urethra (13 of 22 cases) in males and urinary bladder (10 of 18 cases) in females. The major mineral component of calculi was struvite (72%). In male dogs, out of 15 cases, 10 cases were struvite and 5 cases were calcium oxalate uroliths. And, in female dogs, 8 of 10 cases were struvite. In some cases, mineral composition and urine pH was not matched. In conclusion, in the dogs with predisposing factors for urolithiasis, regular examination or proper diet should be added to prevent the disease. And the mineral composition of calculi should not be predicted solely by the pH or crystal component of urine.

• Korean Journal of Radiology
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• v.2 no.1
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• pp.61-62
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• 2001

We present the characteristic plain radiographic and intravenous urographic (IVU) findings of calculus formed over a hair. A 66-year-old man who had been quadriplegic for 40 years because of vertebral injury was admitted for further evaluation of frequent urinary tract infection. Plain radiography showed a linear, serpiginous calcification in the lower abdomen, and IVU revealed a round filling defect with linear radiopacity in the bladder, suggesting calculus. The gross appearance of the stone after extraction demonstrated that calcification had formed over a hair.

• Journal of Veterinary Clinics
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• v.14 no.1
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• pp.19-23
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• 1997

Ultrasonographic diagnosis of kidney and urinary bladder disease was performed in native Korea cattle. Ultrasonogaphic appearence of kidney and urinaryy baldder according to the growth were determined from 6 to 13 months by monthly examinations in 9 native Korean cattle. The kidney and urinary bladder were examined in standing position. The position, dimension, and structure of both kidneys were determined at 12 intercostal space and paralumbar fossa by use of ultrasonography. Ultrasonograms were obtained with 3.5 or 5.0-MHz sector transducer. The width and depth of the kidney, and the diameter of renal parenchyma and renal sinus were observed. Both kidneys were observedfrom the body surface until 8 months old age, but over the 9 months old age, only right kidney was easily accessible. The width of right kidney at the 6, 7, 8, 9, 10, 11, 12 and 13 months old age were 5.7, 6.3, 6.9, 7.6, 8.4, 9.3, 9.8 and 10.7 cm, respectively. The depth 5.8, 6.1 and 6.6 cm, respectively. The size of left kidney was similar to right kidney until 8 months old age. After the 9 months old age, only right kidney was easily accessible. The circumference of urinary bladder at the 6, 7, 8, 9, 10, 11, 12 and 13 months old age were 19.1, 21.7, 22.5, 23.0, 24.2, 25.3, 27.8 and 29.1 cm, respectively. Calculi in urinary bladder were observed by ultrasonography.

• Journal of the korean veterinary medical association
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• v.16 no.1112
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• pp.369-374
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• 1980

The treatment of a Korean cattle aged 1.8 years which had the urinary calculus in the middle region between the scrotum and the anus was carried out in Kyungju, 1978. This case is very rare in animal surgery but the result of' the surgery was very effecti

• Journal of Veterinary Clinics
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• v.21 no.2
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• pp.200-204
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• 2004

A 3-year-old, male Shih-tzu dog with clinical signs of dysuria and hematuria was brought to the Veterinary Teaching Hospital. Chonnam National University. The patient was suspected urolithiasis by history taking and clinical signs but urinary and urethra calculus was not found in the radiographic examination. Enlarged prostatic gland (29.0$\times$28.0 mm) and severe finding of cystitis was observed from the ultrasonographic examination. The dog was finally diagnosed as the secondary urethral obstruction by benign prostatic hyperplasia. Castration was performed to treatment of acute hyperplasia of prostatic gland and prostatic cysts. After 26 days of operation, the prostate was defined small, hypoechoic, symmetric and decreased size (18.5$\times$18.0mm) by ultrasonography and dysuria cured completely.

• The Journal of the Korea Contents Association
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• v.17 no.6
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• pp.81-85
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• 2017

The aim of this study was to evaluate the usability of applied Low dose Computed Tomography(LDCT) protocol in examining urinary calculus using computed tomography. The subjects of this study were urological patients who visited a medical institution located in Busan from June to December 2016 and the protocol used in this study was Adaptive Statistical Iterative Reconstruction: low-dose CT with 50% Adaptive Statistical Iterative Reconstruction (ASIR). As results of quantitative analysis, the mean pixel value and standard deviation within kidney region of image(ROI)of the axial image were $26.21{\pm}7.08$ in abdomen CT pre scan and $20.03{\pm}8.16$ in low-dose CT. Also the mean pixel value and standard deviation within kidney ROI of the coronal image were $22.07{\pm}7.35$ in abdomen CT pre scan and $21.67{\pm}6.11$ in low dose CT. The results of qualitative analysis showed that four raters' mean values of observed kidney artifacts were $19.14{\pm}0.36$ when using abdomen CT protocol and $19.17{\pm}0.43$ in low-dose CT, and the mean value of resolution and contrast was $19.35{\pm}0.70$ when using abdomen CT protocol and $19.29{\pm}0.58$ in low-dose CT. Also the results of a exposure dose analysis showed that the mean values of CTDIvol and DLP in abdomen CT pre scan were 18.02 mGy and $887.51mGy{\cdot}cm$ respectively and the mean values of CTDIvol and DLP when using low-dose CT protocol were 7.412 mGy and $361.22mGy{\cdot}cm$ respectively. The resulting dose reduction rate was 58.82% and 59.29%, respectively.