Leiomyosarcoma of the renal pelvis.

We report a case of renal leiomyosarcoma arising from the renal pelvis with immunohistochemical confirmation of the diagnosis. In this instance clinical presentation and imaging finding are not helpful in accurately establishing the diagnosis preoperatively. Wide surgical excision would appear to be the treatment of choice.     

Radiolucent defects within renal pelvis.

Radiolucent filling defects within the renal pelvis are common findings in diagnositc urography, and because of their myriad causes the diagnostician is often faced with a challenging problem. Several of the more unusual causes of renal pelvis filling defects are described and their diagnosis, pathophysiology, and therapy discussed.     

Renal adenocarcinoma metastasizing to contralateral renal pelvis

Ureteric metastases from renal adenocarcinoma are uncommon and occur predominantly in the residual ipsilateral ureteric stump. We report on a patient with renal adenocarcinoma metastasizing to the contralateral renal pelvis and the clinical problems involved.     

Squamous cell carcinoma of the renal pelvis. A clinical case

Squamous cell carcinoma of the renal pelvis is uncommon, accounting for approximately 10% of all renal pelvic tumours. It's often associated with chronic renal calculi or infection and it usually presents at an advanced stage with pain or a palpable mass. We report an incidental case of squamous cell carcinoma of the renal pelvis, associated with chronic renal calculi and infection, and weight loss. The prognosis of patients with advanced squamous cell carcinoma of genitourinary origin is poor. In patients with chronic stones or infection squamous cell carcinoma of renal pelvis must be suspected if survival is to be affected.     

A case of renal cell carcinoma metastasizing to the contralateral kidney and renal pelvis

Extremely rarely renal cell carcinoma metastasizes to the contralateral renal pelvis or ureter. A 42-year-old man had undergone left radical nephrectomy for renal cell carcinoma (pT1b, grade 2) in March, 2000. Fifteen months later, he complained of macroscopic hematuria. Computed tomographic scanning and retrograde pyelography showed a right renal pelvic tumor. Enucleation of pelvic tumor was performed and a parenchyma mass incidentally identified in the right kidney was also resected. Histopathological examination of each tumor revealed renal cell carcinoma identical to the primary tumors in the left kidney suggesting metastasis to renal pelvis and de novo tumor or metastasis in the right kidney.     

Prostatic carcinoma with directextension to renal pelvis

Metastasis of prostatic carcinoma to the kidney is rare. In this unique case the tumorascended the ureter to the renal pelvis.     

Carcinosarcoma of renal pelvis

A new case of carcinosarcoma of the renal pelvis is reported and the literature reviewed. This tumor occurs in patients over sixty years of age. Three patients died of the disease in one year, and 2 showed six-month and two-year disease free survival after nephrectomy.     

Cholesteatoma of renal pelvis

A case of renal cholesteatoma is presented in which the preoperative diagnosis of one of the keratinizing conditions of the renal pelvis was made. The clinical, radiologic, and histopathologic features are detailed.     

Amyloidosis of renal pelvis and urinary bladder.

We describe a patient with amyloidosis of renal pelvis and 2 patients with urinary bladder amyloidosis. Clinical presentation in all of the cases mimicked cancer of the respective sites. Clinical diagnosis of amyloidosis is not possible, making biopsy mandatory. Immunology of amyloid formation and treatment of amyloidosis are discussed.     

Leiomyoma of renal pelvis

Renal leiomyoma are uncommon mesenchymal tumours, which can arise from any organ of the genitourinary tract with smooth muscle cells. The diagnostic imaging techniques available can not differentiated easily leiomyoma from other malignant renal masses. Since preoperative diagnosis cannot be made, management usually involves radical nephrectomy as in the case described. After treatment, prognosis is excellent.     

A case of adenocarcinoma of the renal pelvis

A 28-year-old female had adenocarcinoma arising from the renal pelvis with ascites containing adenocarcinoma cells. The primary site was treated with radical nephrectomy, resection of the remnant ureter with a bladder cuff. Combination chemotherapy with cisplatin, doxorubicin, and cyclophosphamide (CAP) was performed as an adjuvant therapy. Approximately 3 years after the nephrectomy, she is currently alive with no clinical evidence of recurrence. CAP seems to have been effective in the treatment of the disease.     

A case of amyloidosis of the renal pelvis

We report a case of localized amyloidosis of the renal pelvis and upper ureter arising in a 74-year-old man who presented at our hospital with gross hematuria. The intravenous pyelogram showed right hydronephrosis and stenosis of right renal pelvis and upper ureter. The cystoscopy view was normal, but the right retrograde-ureteropyelogram showed a long irregular stricture of the renal pelvis. Ureteroscopy was performed and rubbing biopsy of edematous, bleeding lesion suggested class IIIb, transitional cell carcinoma. With the diagnosis of a right renal pelvic tumor, right nephroureterectomy was performed. The histology report stated "massive deposits of amyloids are seen in the segment of macroscopically abnormal renal pelvis". Amyloidosis of the renal pelvis is a rare entity and 12 cases were reported in the Japanese and English literature.     

Mucinous adenocarcinoma of renal pelvis

Thirty-three cases of mucinous adenocarcinoma of the renal pelvis have been reported previously. We add an additional case which demonstrates that the tumor may behave in a relatively nonaggressive manner.