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Biomedical subjects

R A Blath

Publications and source records attributed to R A Blath.

10 recordsLinked to original sources
PubMed1976

Papillary renal cell carcinoma: a clinical, radiologic, and pathologic study of 34 cases.

Papillary renal cell carcinoma (RCC) is known by its tendency to avascularity by angiography; however, data concerning its clinicopathologic spectrum and prognosis are not available. In a review of 224 renal cell carcinomas accesioned in our files, 34 were found to be papillary and 190 of other histologic types. A comparative analysis of these two gropus revealed marked differences. The majority of papillary tumors (85.3%) were in pathologic stage I, whereas more than half of the nonpapillary tumors had extended beyond the limits of the kidney. Follow-up data revealed that the survival for papillary RCC was significantly higher than that for nonpapillary tumors. This difference held true even when tumors in the same pathologic stage were compared. Many papillary tumors, particularly those with a favorable course, were massively necrotic, densely infiltrated by macrophages, or both. In view of these findings, the possibility that host mechanisms are involved in destruction and confinement of the tumor is discussed. Examination of kidney tissue distant from the tumor disclosed, in some cases, atypical hyperplastic changes of collecting tubules; this raises the possibility that some papillary tumors arise from distal tubular epithelium. Hypo- or avascularity was present in all papillary RCC's studied by angiography.

Adenocarcinoma↗
PubMed1976

Clinical comparison between vascular and avascular renal cell carcinoma.

Of 72 patients with renal cell carcinoma 19 were found to have an angiographic avascular neoplasm. These avascular tumors have a lower incidence of vein and capsule invasion than vascular tumors. Among these avascular cancers papillary adenocarcinoma was the predominant histologic pattern. Patients with papillary tumors seem to have a lower clinical stage and increased survival rate than patients with non-papillary tumors.

Adenocarcinoma, Papillary↗
PubMed1976

Spontaneous nephro-duodenal fistula.

Nephroduodenal fistulas are an uncommon clinical entity characterized by upper abdominal pain and associated with pyelonephritis and renal calculus formation. Most of the recent cases reported are secondary to inflammatory changes in the kidney. Two cases are reported here, one of a nephroduodenal fistula and another of a combined nephroduodenal and nephrocolic fistulae. Carefully monitored X-ray studies determined in both cases the exact site and extent of the fistulae. The optimal treatment is nephrectomy.

Adult↗
PubMed1975

Intravenous hyperalimentation in the treatment of difficult urologic problems.

Intravenous hyperalimentation has gained great acceptance in the management of complex medical and surgical problems. This paper presents two cases of fistula developing in patients treated with irradiation and who had total cystectomy and ileal conduit diversion for carcinoma of the urinary bladder. The fistulas closed completely after two to four weeks of hyperalimentation. Neither patient required operation. Parenteral nutrition can be of value in the management of various difficult urologic problems.

Carcinoma, Transitional Cell↗