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At least 919 records · Page 51Linked to original sources
PubMed1985

Experimental study of the pressure-volume and pressure-time relations in the completely obstructed pelvis of the porcine kidney. Part 3: Stability of the pelvicalyceal system.

In a series of experiments with pigs the completely obstructed renal pelvis was filled with Ringer's lactate at a constant rate of 2 ml/min. At various pressure levels lower than 50 mm Hg the relations pressure vs infused volume and pressure vs actual intrapelvic volume were repeatedly measured. It was concluded that the measurements were reproducible and that the pelvicalyceal system is -under these experimental conditions- a stable elastic unit.

Animals↗
PubMed1975

Subepithelial hemorrhage in the renal pelvis and ureter simulating pyeloureteritis cystica.

Two children are presented with similar appearing small urographic defects in the ureter and renal pelvis similar to pyeloureteritis cystica. In one patient with aplastic anemia who died the abnormalities represented areas of subepithelial hemorrhage. Another child had clinically diagnosed Henoch-Schonlein purpura and the defects were probably due to subepithelial hemorrhage.

Child↗
PubMed1993

Anatomic basis of laparoscopic surgery in the male pelvis.

Laparoscopic surgery of the male pelvis remains a risky procedure, with around 15% of perioperative complications, as compared to 0.03% in laparoscopic surgery for gynecologic and obstetric conditions. Many of these complications are due to the surgeon's being faced with an unfamiliar anatomic situation in his approach through the laparoscopic operative field. We have added to the data of the literature our anatomic and clinical experience in order to define the anatomic basis of surgical risk in this type of procedure. While dissection lateral to the iliac vessels (surgery of the spermatic cord) is safe, dissection medial to these vessels is more risky because of the confined anatomic relationships and their variations (particularly vascular anomalies and variable relations of the ureter).

Humans↗
PubMed1992

Sonographically demonstrated thickening of the renal pelvis in children.

Thickening of the wall of the renal pelvis has been attributed to infection, to rejection in allografts and to non-specific causes by different authors. We reviewed the clinical data, imaging studies and pathology of 35 patients with sonographically demonstrable thickening in 41 renal pelves of native kidneys. Our findings are that less than 50% of the patients had infection. The others had a wide variety of apparent causes for the thickening which include obstruction, surgery, edema induced by chemicals and other processes. Vesicoureteral reflux was demonstrated in 50% of the patients studied by cystography. We concluded that renal pelvic thickening is a non-specific finding.

Adolescent↗
PubMed1985

Renal adenoma incidentally found in removed kidney in a patient with transitional cell carcinoma of the renal pelvis.

Concurrent primary renoparenchymal or renal pelvic neoplasms of different histology in the same kidney appear to be unusual. We herein report on a 75-year-old man in whom a tiny renal adenoma, a transitional cell carcinoma of the renal pelvis, ipsilateral ureter papillomas and transitional carcinoma of the urinary bladder were found. The clinicopathologic findings of this patient as well as the oncogenesis of renal tumours are discussed.

Adenoma↗
PubMedDate not supplied

Cortical renal leiomyoma with extension to renal pelvis.

We describe a case of renal leiomyoma in a 21-year-old woman who presented with flank pain and hematuria. Urographic and computed tomographic (CT) studies revealed a large right renal mass with polypoid outgrowth protruding into the renal pelvis. Cortical renal leiomyoma with this radiographic manifestation is extremely rare.

Adult↗
PubMed1995

Castleman's disease of the abdomen and pelvis: report of three cases and a review of the literature.

Three cases of Castleman's disease (CD) of the abdomen and pelvis are reported. Tumoral lesions were located in the lymph nodes of the head of the pancreas, the gastropancreatic fold, and around the left iliac artery. Histologically, all the tumoral lesions demonstrated the hyalinevascular type of CD. This unusual presentation made CD difficult to diagnose preoperatively, since these lesions more closely resembled malignant tumors on computed tomography and angiography. We discuss the problems of diagnosing and classifying CD, together with a review of the literature.

Abdomen↗
PubMed1992

A Barycentremetric study of the sagittal shape of spine and pelvis: the conditions required for an economic standing position.

The standing posture of 17 young men and women were studied using Barycentremeter measurements and full spine radiograph with a single referential system. These procedures provide in vivo measurements of the weight and center of weight supported by each vertebra and the coxofemoral joints. The relationship between the vertebra, the sacrum or the coxofemoral rotation axis and the center of weight they support, is displayed. The moment of the corresponding force may also be assessed. Mean values were computed and the relation with spine sagittal curves and pelvic parameters were studied. The position of the center of weight, in front of or behind the vertebra or the coxofemoral joints, requires an opposing muscle force to ensure mechanical stability. The load exerted on the vertebra cannot be precisely evaluated, but we can describe the way in which these loads vary when the spinal curves and the pelvic slope change. This study provides basic data suggesting that there is a tendency to maintain the body in the most economical position in terms of muscle fatigue and vertebral strain. Individual anatomical shapes and pelvic parameters of the pelvis induce corresponding specific sagittal curves of the spine. This concept is very useful for analysing pathological situations and devising appropriate treatment.

Adult↗
PubMed1997

Gadolinium-enhanced magnetic resonance angiography of the pelvis in patients with erectile impotence.

This study evaluated the potential of contrast-enhanced digital-subtraction magnetic resonance angiography (CE-DS-MRA) for noninvasive angiographic delineation of the arterial supply of the penis in patients with erectile dysfunction. After induction of an erection with prostaglandin E, a three-dimensional fast imaging with steady-state precision (FISP) sequence with TE of 1.8-2 milliseconds, TR of 4.4-5 milliseconds, and flip angle of 40 degrees-60 degrees was used to obtain high-resolution angiograms of the pelvis and penis during the injection of gadolinium diethylenetriaminepentaacetic acid (Gd-DTPA) 0.3 mmol/kg body weight, within 30-50 seconds. DS maximum intensity projections (MIPs) and multiplanar reconstructions (MPRs) were compared with clinical work-up and directional Doppler ultrasound in 11 patients. In all 11 patients (100%), the arterial supply of the penis could be delineated from the aortic bifurcation via the iliac and internal pudendal arteries to the dorsal and deep penile arteries. Of the 22 internal pudendal arteries, 6 (27%) were occluded on CE-DS-MRA and 5 (23%) had stenoses, of which 4 (18%) were greater than 50%. In 7 patients (64%) good correlation between CE-DS-MRA and clinical findings and/or Doppler ultrasound was found; in 2 patients (18%), the correlation was moderate, and in 2 patients (18%) results were discrepant. In 6 patients (55%), MRA provided additional information to the clinical and Doppler ultrasound work-up. CE-DS-MRA can delineate small vessels such as the internal pudendal and penile arteries and thus has the potential to become a noninvasive angiography method in the work-up of erectile impotence.

Arteries↗
PubMed1990

A renal cell carcinoma extending into the renal pelvis simulating transitional cell carcinoma.

A case of renal cell carcinoma with unusual extension is reported, in which the radiographic findings have a close resemblance to those of transitional cell carcinoma of the renal pelvis. We emphasize that it is occasionally difficult to draw a distinction between transitional cell carcinoma with renal invasion and renal cell carcinoma with renal pelvic extension even by computed tomography (CT) and angiography.

Adult↗
PubMed1986

Magnetic resonance imaging of the pelvis: prostate and urinary bladder.

Magnetic resonance imaging has opened up a new horizon in the evaluation of the male pelvis. Its direct multiplanar imaging and display of the unique tissue contrast allows for the demonstration of prostate anatomy. Prostatic disease, even when confined to the gland, is easily depicted. However, one cannot distinguish benign from malignant processes. In a patient with a known prostatic neoplasm, magnetic resonance is useful as a staging modality. Accuracy in the staging of prostatic malignancies by MRI surpasses that of ultrasound or CT. In the evaluation of the urinary bladder, the greatest advantage of magnetic resonance is its ability to differentiate between a normal bladder, and other pathologic conditions affecting the bladder, including inflammatory, congestive and neoplastic processes. In the evaluation of bladder carcinoma, magnetic resonance is useful as a staging modality. Clinical application of magnetic resonance is just beginning and therefore, the full potential of the modality has yet to be explored.

Adult↗
PubMed1989

Transverse fusion of the renal pelvis and single ureter.

We present a case of a rare renal anomaly in which the 2 kidneys (separate or fused across the midline) are drained by a common renal pelvis and ureter. Previously reported cases have been reviewed and are classified in 3 groups according to their anatomical features. The lesion is associated with some frequency with imperforate anus, sacral and other vertebral defects, neurogenic bladder, vesicoureteral reflux, upper tract dilatation, and urinary tract infections.

Abnormalities, Multiple↗
PubMed1979

An unusual vascular impression on the renal pelvis.

In a female patient who presented with the complaint of dysuria, angiography was required to distinguish a vascular impression on the renal pelvis from a possible tumor or calculus. Neither intravenous urography nor retrograde pyelogram clarified the smooth filling defect sufficiently to rule out the possibility of a urothelial tumor.

Adult↗
PubMed1987

Primary amyloidosis of the ureter and renal pelvis.

We present a rare case of primary amyloidosis involving the ureter and renal pelvis. Histologic examination is required to distinguish this condition from transitional cell carcinoma. Intraoperative diagnosis of amyloidosis by frozen section may allow for a conservative surgical approach.

Amyloidosis↗
PubMed1988

Percutaneous endourologic approach for transitional cell carcinoma of the renal pelvis.

A small mass was detected in the renal pelvis during investigation for hypertension and diminished renal function. Its presence was confirmed by computed tomography. Since the patient was not a candidate for nephrectomy, interventional percutaneous techniques were used to confirm the diagnosis of transitional cell carcinoma and ultimately permit endourologic access for resection and cure.

Aged↗