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Query: UMLS:C0403608 (ureter)
 9,655 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

An unusual tumor of the ureter in an elderly man is reported. The tumor showed evidence of epithelial and mesenchymal differentiation based on histological and immunocytochemical criteria, and it behaved aggressively, comparable to that seen in other mixed tumors of this type arising from elsewhere within the genitourinary tract. It is proposed that this tumor be designated carcinosarcoma of the ureter.
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PMID:Carcinosarcoma (mixed mesodermal tumor) of the ureter. 282 71

We report a case of unilateral ureteral obstruction owing to carcinosarcoma of the distal ureter. Tumor recurred 6 months after ureteronephrectomy and the patient died 2 1/2 years later. A review of the literature revealed only 3 other cases of ureteral carcinosarcoma, all of which had a similar aggressive course. Recognition and separation of this entity from the more usual transitional cell carcinoma are important because of its apparent poorer prognosis.
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PMID:Primary carcinosarcoma: a rare cause of unilateral ureteral obstruction. 356 Mar 37

A rare case of carcinosarcoma of the ureter is reported. Histologically, this neoplasia was an unusual heterologous carcinosarcoma of the ureter. 2 years after the initial total nephroureterectomy, the patient died from recurrence.
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PMID:Carcinosarcoma of the ureter. 669 93

Only about 2% of the urinary tract are not of urothelial origin. Our knowledge of their morphology and biology is mainly based on single case reports, and therefore apart from a few exceptions very poor. Generally, the most often affected site is the urinary bladder (79.2%), followed by the urethra (12.7%), pelvis (4.9%) and ureter (3.2%). The urinary bladder also is the only organ in which all different histological types of these tumors were described. According to their histogenesis non-urothelial tumors (NUT) can be classified by the following main groups: soft tissue tumors, mixed epithelial and non epithelial tumors (carcinosarcomas), neuroendocrine carcinomas, carcinoids, malignant lymphomas, malignant melanomas and extragonadal germ cell tumors. Moreover some very interesting tumor-like lesions, like malakoplakia and inflammatory pseudosarcoma, mainly occur in this region. About 75% of all NUT of the urinary tract belong to the soft tissue tumors. Rhabdomyosarcomas in children and leiomyomas and -myosarcomas in adults are the more frequent histological types. Leiomyosarcomas can easily be confused with other tumor types or even with inflammatory pseudotumors. The use of immunohistochemistry to achieve a correct diagnosis is mandatory but not always successful. A relatively frequent tumor occurring in the bladder of young adults is the paraganglioma (pheochromocytoma), which usually produces typical symptoms of catecholamine excess. Carcinosarcomas of the urinary bladder contain both epithelial and mesenchymal components. They have to be distinguished from collision tumors (coexistent but separate carcinoma and sarcoma), spindle cell transitional carcinomas as well as from carcinomas with osseous or cartilaginous metaplasia. Carcinoids and neuroendocrine carcinomas developed from the neuroendocrine cells scattered all over the transitional epithelium of the bladder. Neuroendocrine carcinomas of the bladder are also called "oat cell carcinomas" since they show the same histological features and immunoreactivity as the oat cell carcinomas of the lung. They share also the same poor prognosis. The affection of the urinary tract in generalized malignant lymphomas and leukemias occur in more than 30% of cases. Lymphomas, primarily localised in the urinary bladder are, however, extremely rare. The most frequent ones are low grade non Hodgkin lymphomas, although 3 cases of Hodgkin disease and a few cases of primary extramedullary plasmacytoma of the bladder have been reported, too.(ABSTRACT TRUNCATED AT 400 WORDS)
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PMID:[Non-urothelial tumors of the urinary tract]. 751 Dec 78

We report a rare case of carcinosarcoma of the ureter presented as a retroperitoneal tumor. The tumor originated in the ureter as a polypoid protrusion and spread around peri-ureteral, retroperitoneal tissues. The polypoid ureteral tumor was composed of an intra-epithelial carcinoma and a submucosal mesenchymal tumor; the histology of the retroperitoneal tumor in the original site was that of a carcinosarcoma. The bulk of the tumor in the retroperitoneum was composed of blastematous, epithelial and sarcomatous neoplastic cells with foci resembling an incomplete glomeruloid formation, thus mimicking a Wilms' tumor. The lesion appeared to originate from multipotential cells in the mucosal layer of the ureter. Whether or not this tumor has a true nephrogenic property is currently unknown. When a retroperitoneal tumor of the adult resembling a Wilms' tumor is found, one should suspect a possible carcinosarcomatous origin in the ureter.
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PMID:Carcinosarcoma of the ureter with unusual histologic features. 800 28

A case of unusual tumor of renal pelvis and ureter is reported. A 82-year-old man was admitted with the chief complaint of gross hematuria. He was diagnosed with bladder tumor and right renal pelvic and ureter tumor by bladder biopsy (TCC G2) and radiological examinations. Right nephroureterectomy was performed after transurethral resection of bladder tumor (TUR-Bt). Histological findings of renal pelvic and ureteral tumor were squamous carcinoma with pseudosarcomatous stroma (so-called carcinosarcoma). Tumor cells showed mostly a sarcomatoid spindle pattern and partly apparent SCC. He was discharged without adjuvant therapy and no recurrence was found for 7 months after operation. In our case, CA19-9 was useful as a tumor marker. Such disease has been confused with true carcinosarcoma or sarcomatoid carcinoma and should be distinguished from them. We reviewed 18 case reports of true carcinosarcoma or sarcomatoid carcinoma of the renal pelvis.
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PMID:[Squamous carcinoma with pseudosarcomatous stroma of the renal pelvis and ureter: a case report]. 810 76

We report a case of true carcinosarcoma involving the urinary bladder, ureter, and renal pelvis in an eighty-year-old man. The patient underwent transurethral resection of the bladder tumor and left nephrectomy, followed by combination chemo- and radiotherapy. He died eighteen months after the nephrectomy.
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PMID:Carcinosarcoma of urothelial organs: sequential involvement of urinary bladder, ureter, and renal pelvis. 844 18

We report a case of carcinosarcoma of the renal pelvis and ureter arising in an 89-year-old man who presented at our hospital with gross hematuria. Abdominal computed tomography, excretory pyelography, and retrograde pyelography demonstrated that left hydronephrosis was caused by an ureteral tumor. Left urine cytology indicated transitional cell carcinoma. The patient underwent chemotherapy and radiation therapy. However, gross hematuria recurred, and the patient underwent left nephroureterectomy. The surgical specimen showed carcinosarcoma in the renal pelvis and ureter histologically. He has been free of cancer for 1.5 years.
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PMID:[Carcinosarcoma of the renal pelvis and ureter: a case report]. 1186 82

Carcinosarcomas of the ureter are rare biphasic neoplasms, with distinct malignant epithelial and mesenchymal components. To the authors' knowledge there have been only 12 cases reported in the literature. Primary cartilaginous tumors of the ureter are also rare tumors. Thus far there has been a single case report of an extraskeletal mesenchymal chondrosarcoma of the ureter in the German literature. Herein a unique case is reported of ureteral carcinosarcoma in an 81-year-old woman presenting with gross hematuria in which the sarcomatous component had extraskeletal mesenchymal chondrosarcomatous differentiation. This is thought to be the first reported case of a carcinosarcoma with such a differentiation in the sarcomatous component.
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PMID:Carcinosarcoma of the ureter: report of a case with unusual histology and review of the literature. 1711 30

Carcinosarcoma is a malignancy that occurs very rarely in the renal pelvis, and only a very limited number of cases has been documented. These tumors are composed of both malignant mesenchymal and epithelial elements. Unlike the cases described so far, this carcinosarcoma of the renal pelvis was characterized by quick recurrence, following complete surgical resection. Carcinosarcomas of the renal pelvis are known to be rapid in progression and associated with a poor prognosis. They usually metastasize soon after surgery, but very little information is available on the histologic types that characterize the recurrent tumors. We presented a histologically proven case of renal carcinosarcoma extending from renal pelvis. Convalescence was uneventful, and fifteen months after the operation, he is alive with no recurrence or metastasis. If a rapidly growing tumor is detected that seems to originate from the kidney with extension to ureter and bladder, carcinosarcoma should be included in the differential diagnosis.
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PMID:Renal carcinosarcoma: case report and review of literature. 2177 Aug 52


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