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Right Ureter (right + ureter)
Selected AbstractsUreteral obstruction caused by a duplicated anomaly of inferior vena cavaINTERNATIONAL JOURNAL OF UROLOGY, Issue 9 2005LIANG-TSAI WANG Abstract Developmental anomalies of inferior vena cava are a rare cause of ureteral obstruction. We report a case that presented with right upper ureteral obstruction that radiologically simulated a retrocaval ureter. An aberrant vessel, which caused obstruction of the right ureter was identified at operation and surgical relief of ureteral obstruction was performed. Inferior venocavography was performed postoperatively and disclosed an unusual incomplete duplication of inferior vena cava. Our findings suggested that ureteral obstruction by incompletely duplicated anomaly of the inferior vena cava should be included in the differential diagnosis of extrinsic ureteral obstruction. [source] Distal ureteral atresia: Recovery of renal function after relief of obstruction at ten months oldINTERNATIONAL JOURNAL OF UROLOGY, Issue 6 2005SATOSHI ASHIMINE Abstract A large cystic mass that occupied more than half of the abdomen was identified by ultrasound in a 10-month-old boy. Intravenous pyelography failed to visualize the right kidney, so we created a loop ureterocutaneostomy followed by temporary nephrostomy to improve renal function. Exploratory surgery revealed complete atresia of the distal right ureter. A ureteral stricture developed after ureteroneocystostomy and undiversion of the loop, so a second reconstruction procedure was required (pelvi-ureteroplasty and reimplantation of the right ureter with a psoas hitch) to free the patient from dependence on catheters. Despite the occurrence of giant hydronephrosis secondary to complete ureteral obstruction at the age of 10 months, the function of the right kidney could be preserved. Accordingly, aggressive attempts to promote functional recovery may be justified even when patients have advanced hydronephrosis. [source] Metastatic Basal Cell Carcinoma with Neuroendocrine Differentiation or Merkel Cell Carcinoma?JOURNAL OF CUTANEOUS PATHOLOGY, Issue 1 2005A. Andea We present here a case of basal cell carcinoma (BCC) with neuroendocrine features that has transformed into a high-grade neuroendocrine carcinoma with various morphologic features of Merkel cell carcinoma (MCC). A 54-year-old white female was treated for a BCC of the right thigh. Pathologic examination revealed an otherwise classical BCC that demonstrated granular positivity for chromogranin. Six years later the patient developed a right inguinal lymphadenopathy diagnosed as metastatic BCC with squamous changes. The metastatic BCC showed partial peripheral palisading and a trabecular pattern. Two years later the patient underwent a right nephrectomy due to obstruction of the right ureter by metastatic BCC. After another four years the patient came back with extensive involvement of the appendiceal wall and right ovary by a diffusely infiltrating metastatic basaloid and trabecular carcinoma. This time the tumor had many histologic features of MCC and showed strong positivity for chromogranin and also for CK20 and NSE. Electron microscopy revealed neurosecretory granules. This case is an example of a chromogranin positive basal cell carcinoma of the skin, which transformed during multiple recurrences into a high grade neuroendocrine carcinoma with features of Merkel cell tumor, demonstrating the potential for cross differentiation among skin tumors. [source] Development of the human hypogastric nerve sheath with special reference to the topohistology between the nerve sheath and other prevertebral fascial structuresCLINICAL ANATOMY, Issue 6 2008Yusuke Kinugasa Abstract Semi-serial sections from the lumbosacral region of nine fetuses (8,25 weeks gestation) were examined to clarify the lumbar prevertebral fascial arrangement. The prevertebral fasciae became evident after 12 weeks of age. After 20 weeks of age, the hypogastric nerve (HGN) was sandwiched by two fascial structures; the ventral fascia which seemed to correspond to the mesorectal fascia, whereas the dorsal fascia corresponded to the presacral fascia. These fasciae or the HGN sheaths extended laterally along the ventral aspects of the great vessels and associated lymph follicles. The ventral fascia is, to some extent, fused with the mesocolon descendens on the left side of the body. Notably, the lateral continuation of these two fasciae also sandwiches the left ureter, but not the right ureter, presumably due to modifications by the left-sided fusion fascia. A hypothetical common sheath for the HGN and ureter (i.e., the ureterohypogastric or vesicohypogastric fascia) might thus be an oversimplification. Before retroperitoneal fixation, the morphology of the peritoneal recess along the mesocolon descendens and mesosigmoid suggested interindividual differences in location, shape, and size. Therefore, in adults the ease of surgical separation of the rectum and left-sided colon from the HGN seems to depend on interindividual differences in the development of the embryonic peritoneal recess. On the caudal side of the second sacral segment, fascial structures were restricted along and around the HGN, pelvic splanchnic nerve, and pelvic plexus. The rectal lateral ligament thus seems to represent a kind of migration fascia formed by mechanical stress. Clin. Anat. 21:558,567, 2008. © 2008 Wiley-Liss, Inc. [source] | ||||||||||