Sarcoma of the kidney is a rare condition. Leiomyosarcoma is the most common of the kidney sarcomas. Renal leiomyosarcoma usually originates from the smooth muscle layers of the kidney, for example, the renal capsule and renal vessels. Renal pelvis neoplasms, however, are primarily transitional cell carcinomas, and renal pelvis leiomyosarcomas are extremely uncommon. Renal pelvis leiomyosarcoma has never been reported in Korea. Moreover, no more than 10 cases have been reported internationally. However, none of these were associated with kidney abnormalities. Here we describe a case of leiomyosarcoma that originated from the blind end of a bifid renal pelvis.
Female ; Humans ; Kidney Neoplasms/*pathology ; Kidney Pelvis/*pathology/radiography ; Leiomyosarcoma/*pathology ; Tomography, X-Ray Computed

A 51-year-old male patient was presented to our hospital for inspection of right renal space-occupying lesions. CT revealed soft tissue density in the right renal pelvis and renal pelvis ureter transitional crumb, for which a clinical diagnosis of right renal cancer was made. After laparoscopic radical resection of the right kidney, pathological examination supported the diagnosis of idiopathic retroperitoneal fibrosis. With an unclear pathogenesis, idiopathic retroperitoneal fibrosis presents with atypical clinical manifestations but shows specific features in imaging examination. Its treatment is individualized according to the specific condition for which conservative medical or surgical treatment can be considered. Retroperitoneal fibrosis has a low incidence and a high misdiagnosis rate, and imaging examinations remain currently the primary modality for diagnosis with specific findings.
Diagnostic Errors ; Humans ; Kidney Neoplasms ; Kidney Pelvis ; pathology ; Male ; Middle Aged ; Retroperitoneal Fibrosis ; diagnosis ; Ureter ; pathology

Aged ; Amyloidosis ; diagnosis ; pathology ; Humans ; Kidney Pelvis ; pathology ; Male ; Ureter ; pathology ; Urinary Bladder ; pathology

Aged ; Female ; Humans ; Kidney Pelvis ; pathology ; Neoplasm Metastasis ; pathology ; Pelvic Neoplasms ; pathology ; surgery

OBJECTIVETo explore the relationship of pyelic separation with gestational age, body weight and sex in early newborns.

METHODSA total of 320 neonates were examined by renal ultrasound 2-7 days after birth. The neonates included 180 boys and 140 girls, with a mean gestational age of 36±3 weeks (28-42 weeks) and a mean birth weight of 2430±1000 g (900-4870 g). Correlation analysis was performed between renal pelvis anteroposterior diameter (APD) and gestational age/body weight. The newborns were grouped based on gestational age, body weight and sex and the incidence of pyelic separation was compared among the groups.

RESULTSPyelic separation was found in 100 of the 320 newborns. The incidence of pyelic separation in boys (37.8%, 70 cases) was significantly higher than in girls (22.2%, 30 cases) (P<0.05). The incidence rates of pyelic separation on the left side, right side and both sides were 59%, 13% and 29% respectively in boys, and 53%, 7% and 40% respectively in girls. There was no significant difference in the location of renal pelvis separation between boys and girls (P>0.05). There significant difference in the incidence of pyelic separation between different gestational age groups (P>0.05). APD was positively correlated with gestational age and birth weight (P<0.05). The incidence of pyelic separation was negatively correlated with birth weight in all newborns except those who were macrosomic (P<0.05).

CONCLUSIONSThe incidence of pyelic separation in early newborns is closely associated with birth weight and sex. APD is positively correlated to gestational age and birth weight. Pyelic separation often occurs more frequently on the left side or both sides than on the right side.

Birth Weight ; Female ; Gestational Age ; Humans ; Infant, Newborn ; Kidney Pelvis ; pathology ; Male ; Ureter ; pathology

Adenocarcinoma ; pathology ; Carcinoma, Squamous Cell ; pathology ; Carcinoma, Transitional Cell ; pathology ; Female ; Humans ; Kidney Neoplasms ; pathology ; Kidney Pelvis ; pathology ; Middle Aged ; Neoplasms, Multiple Primary ; pathology

PURPOSE: To evaluate the outcomes of rigid ureterorenoscopy (URS) for renal pelvic stones (RPS) sized 1 to 2 cm and to determine the predictive factors for the requirement for flexible URS (F-URS) when rigid URS fails. MATERIALS AND METHODS: A total of 88 patients were included into the study. In 48 patients, the RPS were totally fragmented with rigid URS and F-URS was not required (group 1). In 40 patients, rigid URS was not able to access the renal pelvis or fragmentation of the stones was not completed owing to stone position or displacement and F-URS was utilized for retrograde intrarenal surgery (RIRS) (group 2). The predictive factors for F-URS requirement during RIRS for RPS were evaluated. Both groups were compared regarding age, height, sex, body mass index, stone size, stone opacity, hydronephrosis, and previous treatments. RESULTS: The mean patient age was 48.6+/-16.5 years and the mean follow-period was 39+/-11.5 weeks. The overall stone-free rate in the study population was 85% (75 patients). In groups 1 and 2, the overall stone-free rates were 83% (40 patients) and 87% (35 patients), respectively (p>0.05). The independent predictors of requirement for F-URS during RIRS were male gender, patient height, and higher degree of hydronephrosis. CONCLUSIONS: Rigid URS can be utilized in selected patients for the fragmentation of RPS sized 1 to 2 cm with outcomes similar to that of F-URS. In case of failure of rigid URS, F-URS can be performed successfully in this group of patients.
Adult ; Aged ; Equipment Design ; Female ; Humans ; Kidney Calculi/pathology/*surgery/therapy ; Kidney Calculi/*surgery ; Kidney Pelvis/pathology/*surgery ; Kidney Pelvis/*surgery ; Lithotripsy ; Male ; Middle Aged ; Retrospective Studies ; Risk Factors ; Treatment Failure ; Treatment Outcome ; Ureteroscopes ; Ureteroscopy/*methods

Aged ; Foreign-Body Migration ; complications ; Hemostasis, Surgical ; instrumentation ; Humans ; Kidney Calculi ; etiology ; Kidney Pelvis ; pathology ; Male ; Nephrectomy ; adverse effects

Aged ; Carcinoma ; diagnosis ; surgery ; Humans ; Kidney Neoplasms ; diagnosis ; surgery ; Kidney Pelvis ; pathology ; surgery ; Magnetic Resonance Imaging ; Male

Author herein describes 2 cases of spontaneous urinary extravasation of the kidney whose underlying diseases are ureter stone associated with acute pyelonephritis and hydronephrosis caused by B.P.H. respectively. The frank pelvic rupture associated with ureter stone was managed by nephrectomy and peripelvic extravasation with fornical back flow associated with B.P.H. was managed by urethral catheter drainage. Because it is not uncommon and may cause serious retroperitoneal complication, it should be considered in patients who present flank pain and mass with a history of obstructive uropathy, and acute abdomen not suggesting urologic pathology. The mechanics of peripelvic extravasation and brief review of diagnosis and management are presented.
Abdomen, Acute ; Diagnosis ; Drainage ; Flank Pain ; Humans ; Hydronephrosis ; Kidney ; Kidney Pelvis* ; Mechanics ; Nephrectomy ; Pathology ; Pyelonephritis ; Rupture ; Ureter ; Urinary Catheters