Urothelial carcinoma with abundant myxoid stroma is a newly-described and extremely rare entity. Since only very few cases have been reported, there is no consensus on its nomenclature. Microscopic examination revealed invasive urothelial carcinoma with widespread low-grade noninvasive areas. There were focal invasive areas in the neighborhood of the renal parenchyma. Malignant urothelial tumor...

Spontaneous rupture of the renal pelcis occurred in 4 cases following renul trunsplantation. The diagnosis ILUS difficult, and all 4 patients were septic clt the time of trmtnzent. Three ptients sumid, lmt presermtion of the transplant ~L’US pssihle in only 1 cast. The cause is uncertuin lmt inq Iw relntecl to functionul ot!utruction or wsculur insufficiency. Urinart extravasation occurred in 3...

Extracorporeal shock wave lithotripsy (SWL) is a very commonly used treatment modality for appropriate sized stones. Even though it is a noninvasive treatment technique, major complications may occur following SWL sessions. Herein, we report a 17-year-old male patient, who received 2 sessions of SWL treatment for his left kidney stone, 4 months before his admission. Imaging methods showed an en...

Despite the common anomaly of a duplicated collecting system in the urinary tract, urothelial cancer in a duplicated collecting system is a rare occurrence. Herein, we present 2 cases of renal pelvis tumor and 1 case of a ureter tumor which coexisted with a duplicated collecting system. One of the renal pelvis tumors developed bilateral transitional cell carcinoma within the bilateral duplicate...

The urinary tract commences from the renal pelvis and terminates at the urethra. Essentially the tract is subdivided into the upper tract (renal pelvis and the ureters) and the lower tract (bladder and the urethra). This lengthy anatomic enclosure is uniquely made to be sterile. Its sterility is partly maintained by these mechanisms: effective urinary drainage and complete bladder emptying. Thu...

Carcinosarcoma is a rare neoplasm composed of malignant epithelial and stromal elements, and, for rats, carcinosarcomas in the kidney have not been reported. In a long-term study to gather background data, we encountered a spontaneous carcinosarcoma originating from the renal pelvis with metastasis to the lung. At necropsy, a mass was observed in the abdominal cavity, and white nodules were sca...

FIGURE 8-12 International system of radiographic grading of vesicoureteral reflux (VUR). The severity of VUR is most frequently classified according to the International Grading System of Vesicoureteral Reflux, using a standardized technique for performance of voiding cystourethrography. The definitions of this system are illustrated in Figure 8-4 and are as follows. In grade I, reflux only int...

BACKGROUND AND OBJECTIVES Laparoscopic pyelolithotomy was performed in a pelvic kidney with a large renal pelvis calculus. METHODS AND RESULTS Laparoscopic pyelolithotomy was successfully performed in a pelvic kidney with an operative time of 310 minutes. The use of intraoperative fluoroscopy and a semi-automatic suturing device greatly facilitated the procedure. The patient's operative pain ...

We present a rare case of an unobstructed dilated renal pelvis in a newborn female. Prenatal imaging documented a large abdominal cyst in a stable fetus. Postnatal imaging confirmed persistence of this large cyst but with an unclear etiology. The child was taken to surgery by the pediatric surgeons with concern for a possible harmful nonurologic diagnosis. Intraoperative findings were that of a...

Leiomyosarcoma (LMS) is a rare malignant tumor of smooth muscle origin that generally stems from soft tissues and uterine tissue. Although, a small percentage of these may originate from the smooth muscle or vessel walls, most of which are of venous origin. Renal leiomyosarcomas may arise from the smooth muscle fibers of renal pelvis, renal capsule or renal vessels, last one is the most frequen...