scholarly journals Unilateral Medullary Sponge Kidney

2018 ◽  
Vol 1 (2) ◽  
pp. e1-e3
Author(s):  
Rodrigo Neira ◽  
Diego Barrera ◽  
Gaston Astroza
Keyword(s):  
Renal Colic ◽  
Laser Lithotripsy ◽  
Lower Pole ◽  
Resonance Imaging ◽  
Flexible Ureterorenoscopy ◽  
Medullary Sponge Kidney ◽  
Image Study ◽  
Loin Pain ◽  
The Right ◽  
Colic Type

A 40-year-old female with an allergy to medium contrast, presented with bilateral loin pain and renal colic type radiation. Image study with non-contrast computerized tomography and magnetic resonance imaging revealed multiple nephrolithiasis and a complex cyst at lower pole of the right kidney and no findings in the left one. The patient was treated with laser lithotripsy by flexible ureterorenoscopy revealing multiple lithiasis within cystic dilatations of the urothelium. The complex cyst was submitted to partial nephrectomy. Finally, biopsy demonstrated that it was renal parenchyma with polycystic changes in the external corticomedullary area. All findings were compatible with unilateral medullary sponge kidney diagnosis.

scholarly journals Possibilities of retrograde intrarenal surgery in the treatment of renal lower pole stones in children

2018 ◽  
Vol 75 (10) ◽  
pp. 1030-1034
Author(s):  
Predrag Ilic ◽  
Dejan Kostic ◽  
Slobodan Dzambasanovic ◽  
Mirjana Jankovic ◽  
Vladimir Kojovic
Keyword(s):  
Fragment Size ◽  
Renal Stones ◽  
Laser Lithotripsy ◽  
Lower Pole ◽  
Retrograde Intrarenal Surgery ◽  
Flexible Ureterorenoscopy ◽  
Stone Fragment ◽  
Extracorporeal Shock Wave ◽  
Unsuccessful Treatment ◽  
Holmium Laser Lithotripsy

Background/Aim. Renal stones located in the lower pole of kidney represent a serious challenge for surgical treatment in children. The options are: open surgery, extracorporeal shock-wave lithotripsy, percutaneous nephrolithotomy and retrograde intrarenal surgery. Reports about the endoscopic treatment in children are limited. The aim of the study was to evaluate the effectiveness of retrograde intrarenal surgery in pediatric patients with renal stones in lower pole of the kidney. Methods. We retrospectively analyzed the results of the retrograde intrarenal surgery in 24 patients with renal stones in lower pole, between April 2012 and April 2016. Flexible ureterorenoscopy in combination with holmium laser lithotripsy were performed. We considered stone fragment size 3 mm or less as a measure of sufficient fragmentation of the stone. Results. Mean duration of general anesthesia was 68 (range, 40?90) minutes. Duration of hospitalization was 1?3 (mean, 1.6) days. Complications were found after two (8.4%) surgical procedures: perirenal haematoma in one (4.2%) and urinoma in one (4.2%) patient. The stone was completely fragmented in 18 (75%) patients. In 3 (12.5%) patients the stone was incompletely fragmented and in 3 (12.5%) patients the stone was not fragmented. Double J stent was placed in 5 (21%) patients. Mean follow-up was 9 (range, 6?18) months. Conclusion. Retrograde intrarenal surgery in children is the least invasive, effective and safe surgical procedure for stones in lower pole of the kidney, with minimal complication rate. Unsuccessful treatment in some patients was due to loss of ureterorenoscope deflection with laser probe in working channel.

scholarly journals Tumor Surgeries Delayed Due to the COVID-19 Pandemic; Renal Cell Carcinoma Progressing from Stage T1b to T3b: A Case Report

2021 ◽  
Author(s):  
Kadir Karkin ◽  
Hakan Erçil ◽  
Umut Ünal ◽  
Güçlü Gürlen ◽  
Ferhat Ortoğlu ◽  
...  
Keyword(s):  
Cancer Progression ◽  
Renal Vein ◽  
Psychosocial Problems ◽  
Middle Zone ◽  
Lower Pole ◽  
Newly Diagnosed ◽  
Resonance Imaging ◽  
Healthcare Applications ◽  
Distant Spread ◽  
The Right

COVID-19 is a highly contagious disease. This condition affects the decision of both the patient and the surgeon about the surgery of newly diagnosed cancer patients and it may also result in delays in cancer surgeries because of the limitations in healthcare applications. In our particular case, it was aimed to present the transition of the cancer from the localized stage to distant spread stage cancer since the patient who was pre-diagnosed with RCC and who was recommended surgery, did not want to undergo surgery due to COVID-19 pandemic and its risks. Our case was a 49-year-old female patient. In her computed tomography, a 58x70 mm heterogeneously enhancing solid lesion which showed exophytic extension from the middle zone of the right kidney to the lower pole was observed. Surgery was recommended for the patient but the patient claimed that she did not want to undergo surgery due to the risk of COVID-19 pandemic. The patient made an application for the surgery 8 months later. The new magnetic resonance imaging of the patient showed that there was a mass lesion of approximately 76x76x80 mm in size, which involved middle-lower part of the right kidney and extended into the opening of the renal vein VCI by invading the renal vein. Radical nephrectomy and thrombectomy procedure was applied to the patient with RCC? tumor. Due to psychosocial problems caused by the pandemic, surgeries are delayed and an acceleration of the cancer progression from the localized stage to the distant spread stage occurs indispensably.

Efficacy of flexible ureteroscopy and laser lithotripsy for lower pole renal calculi

2014 ◽  
Vol 7 (6) ◽  
pp. 389-393 ◽  
Author(s):  
A Sahai ◽  
F Khan ◽  
F Anjum ◽  
IK Dickinson ◽  
H Marsh ◽  
...  
Keyword(s):  
Renal Calculi ◽  
Laser Lithotripsy ◽  
Flexible Ureteroscopy ◽  
Lower Pole ◽  
Invasive Treatment ◽  
Flexible Ureterorenoscopy ◽  
Stone Free Rate ◽  
Operation Rate ◽  
The Mean ◽  
Free Rate

Objective: Our aim was to determine whether flexible ureterorenoscopy and laser lithotripsy is efficacious and safe in treating lower pole renal calculi. Materials and methods: Patient, procedure and stone data of patients who underwent flexible ureterorenoscopy and laser lithotripsy at our referral centre were collected prospectively between November 2005 and November 2011 and entered into a designated database. In all, 242 procedures were performed in 198 patients. Results: The mean age was 51.2 years. The mean calculi size was 10.51 mm (range 4–27 mm). Thirty seven patients had more than one stone in the lower pole. An access sheath was used in 19 patients (9.6%), 171 (86.4%) had a ureteric stent inserted after the procedure, and 165 patients had a single procedure. Re-operation rate was 16.7%. Stone-free rates after one procedure were 89%, 80% and 41%, respectively, for calculi measuring 4–10 mm ( n=107), 11–20 mm ( n=76) and > 20 mm ( n=15). The overall stone-free rate was 83%, 91% and 95% after one, two and three procedures, respectively. Conclusion: Flexible ureterorenoscopy and laser lithotripsy is a safe and effective minimally invasive treatment option for patients with 4–20 mm lower pole calculi. Staged procedures, however, become necessary as the size of the stone increases greater than 20 mm, and this should be mentioned when counselling patients for their primary procedure.

scholarly journals Developmentally anomalous cerebellar encephalocele arising within the cerebellopontine angle and extending into the adjacent skull base in a pediatric patient

2021 ◽  
Author(s):  
Forrest A. Hamrick ◽  
Michael Karsy ◽  
Carol S. Bruggers ◽  
Angelica R. Putnam ◽  
Gary L. Hedlund ◽  
...  
Keyword(s):  
Skull Base ◽  
Pediatric Patient ◽  
Cerebellopontine Angle ◽  
Resonance Imaging ◽  
Middle Cerebellar Peduncle ◽  
Cerebellar Tissue ◽  
Cerebellar Peduncle ◽  
Histopathologic Analysis ◽  
The Right ◽  
Internal Acoustic Canal

AbstractLesions of the cerebellopontine angle (CPA) in young children are rare, with the most common being arachnoid cysts and epidermoid inclusion cysts. The authors report a case of an encephalocele containing heterotopic cerebellar tissue arising from the right middle cerebellar peduncle and filling the right internal acoustic canal in a 2-year-old female patient. Her initial presentation included a focal left 6th nerve palsy. Magnetic resonance imaging was suggestive of a high-grade tumor of the right CPA. The lesion was removed via a retrosigmoid approach, and histopathologic analysis revealed heterotopic atrophic cerebellar tissue. This report is the first description of a heterotopic cerebellar encephalocele within the CPA and temporal skull base of a pediatric patient.

scholarly journals Stereotactic Body Radiotherapy of a Solitary Metachronous Sphenoid Metastasis from Renal Cell Cancer: A Case Report

2021 ◽  
pp. 269-273
Author(s):  
Charles Marchand Crety ◽  
Estelle Vigneau ◽  
Camille Invernizzi
Keyword(s):  
Renal Cell Cancer ◽  
Renal Cell ◽  
Stereotactic Body Radiation Therapy ◽  
Clinical Presentation ◽  
Histopathological Examination ◽  
Cell Cancer ◽  
Papillary Renal Cell Carcinoma ◽  
Complete Response ◽  
Resonance Imaging ◽  
The Right

Nasosinus metastases from kidney cancer are an unusual clinical presentation although some cases are reported in the literature. Among these cases, sphenoidal metastases are even rarer. Here we report a case of lone sphenoid metastasis in patients with papillary renal cell cancer. Eight months after radical nephrectomy, the patient presented with progressively worsening diplopia. Magnetic resonance imaging showed a mass in the right sphenoid sinus. Histopathological examination of the biopsy sample confirmed diagnosis of sinonasal metastasis from papillary renal cell carcinoma. The patient was declined for surgical management and received stereotactic body radiation therapy. Reassessment MRI at 4 months showed a complete response of the treated sphenoid lesion.

scholarly journals Bicuspid aortic valve morphology and aortic valvular outflow jets: an experimental analysis using an MRI-compatible pulsatile flow circulation system

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Kaoru Hattori ◽  
Natsuki Nakama ◽  
Jumpei Takada ◽  
Gohki Nishimura ◽  
Ryo Moriwaki ◽  
...  
Keyword(s):  
Aortic Valve ◽  
Bicuspid Aortic Valve ◽  
Pulsatile Flow ◽  
Aortic Wall ◽  
Ascending Aorta ◽  
Circulation System ◽  
Resonance Imaging ◽  
Left Posterior ◽  
Flow Circulation ◽  
The Right

AbstractThe characteristics of aortic valvular outflow jet affect aortopathy in the bicuspid aortic valve (BAV). This study aimed to elucidate the effects of BAV morphology on the aortic valvular outflow jets. Morphotype-specific valve-devising apparatuses were developed to create aortic valve models. A magnetic resonance imaging-compatible pulsatile flow circulation system was developed to quantify the outflow jet. The eccentricity and circulation values of the peak systolic jet were compared among tricuspid aortic valve (TAV), three asymmetric BAVs, and two symmetric BAVs. The results showed mean aortic flow and leakage did not differ among the five BAVs (six samples, each). Asymmetric BAVs demonstrated the eccentric outflow jets directed to the aortic wall facing the smaller leaflets. In the asymmetric BAV with the smaller leaflet facing the right-anterior, left-posterior, and left-anterior quadrants of the aorta, the outflow jets exclusively impinged on the outer curvature of the ascending aorta, proximal arch, and the supra-valvular aortic wall, respectively. Symmetric BAVs demonstrated mildly eccentric outflow jets that did not impinge on the aortic wall. The circulation values at peak systole increased in asymmetric BAVs. The bicuspid symmetry and the position of smaller leaflet were determinant factors of the characteristics of aortic valvular outflow jet.

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