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

Retroperitoneal lymphangiomas are uncommon benign tumors usually presenting in early life. They may cause significant pressure on adjacent structures, most often with superior and medial displacement of the kidney and medial deviation of the ureter. Relative radiolucency on total body opacification during excretory urography, and features of a cystic structure on ultrasonography and computed tomography should further suggest the possibility of a retroperitoneal lymphangioma. Vascular stretching and displacement without neovascularity on angiography and contrast entry into the cysts on lower extremity lymphography are additional features, but such procedures are usually unnecessary.
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PMID:Cystic retroperitoneal lymphangioma in infants and children. 63 83

The symptoms of abdominal lymphangioma are unspecific and depend on site and size of the tumor. The most frequent symptoms consist of pain up to the clinical picture of a pseudo-appendicitis, digestive problems, palpable or even exterior visible tumors such as the pseudo-ascites. Often the diagnosis cannot be found by clinical examination or further investigation. As a differential diagnosis all mesenterial cysts as well as other cystic tumors which originate in an abdominal organ must be taken in account. In most cases possible complications make surgical intervention necessary through which an exact diagnosis of the actually asymptomatic tumor can be found. Lymphangioma can lead to obstruction of the intestine, the ureter or the bile-duct. Inflammations of the cyst wall, bleeding into the cyst, torsion of the cyst pedicle and rupture of the cyst occur. The only curative therapy is the total surgical removal. Prognosis is good and relapse seldom occurs. We report on a 4.5-year-old boy with a cystic lymphangioma of the mesosigma. In addition, we discuss cases from the literature of the past 15 years.
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PMID:[Abdominal lymphangioma in childhood]. 205 8

Cystic lymphangiomas of the abdomen are an uncommon kind of hamartoma. Their diagnosis is often difficult and calls for an accurate differential diagnosis of this disease and such lesions as cystic pancreatic neoplasms, pseudocysts, hematomas, abscesses and urinomas. Eight cases of abdominal lymphangioma are reported, in patients ranging 35 to 68 years; all lesions were uni/multilocular containing serous fluid. Lymphangiomas were located in the retroperitoneal space (3 cases), in the mesenteric bed (3 cases), close to the left lumbar ureter (1 case), and on the left colon wall (1 case); the symptoms were little characteristic, mostly due to pressure on the adjacent organs. Both CT and US were able to detect and evaluate the lesions; in particular, CT provided also with exact topography. A small lymphangioma in the left colon was revealed only by barium enema. In 2 huge retroperitoneal lymphangiomas the diagnostic evaluation was improved by the use of CT-guided fine-needle biopsy; in patients with mesenteric lesions angiography was employed, also for surgical planning. Lymphography was never performed because CT and US proved the best diagnostic procedures. All patients underwent surgery, whose results confirmed the previous diagnosis, but for the patient with para-ureteral location the surgeon thought nephrectomy necessary.
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PMID:[Cystic lymphangiomas of the abdomen. CT and US findings]. 267 85

A case of cystic retroperitoneal lymphangioma complicated by hemorrhage is reported in a 7-year-old boy who presented with an abdominal mass. The mass which was partially obstructing the ureter was successfully resected. The imaging findings with emphasis on MR features are described.
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PMID:Cystic retroperitoneal lymphangioma: CT, ultrasound and MR findings. 841 61

Benign tumors of the proximal ureter are very rare. Many of them could be confused with urothelial carcinoma and unnecessarily treated by nephrectomy. In this case, we present the treatment of a lymphangioma localized in the upper ureter, which is an example of benign tumor. During treatment percutaneous tumor resection, an organ-sparing approach, was employed.
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PMID:Lymphangioma of pyeloureteral junction: an extremely rare case. 2314 38