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Query: UMLS:C0000737 (abdominal pain)
 31,184 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Renal oncocytoma is an uncommon tumor. Of 223 renal tumors that were treated at our institution from 1970-1991, 14 (6.2%) were oncocytomas [9 females (65%) and 5 males (35%)]. The highest incidence was observed in the sixth decade (60.7 yrs). Tumor size range from 2 to 19 cm in diameter (mean = 8.07 cm); 11 (78.5%) were localized in the right kidney, principally in the superior pole. The tumor was incidentally discovered in 8 cases (57%); 1 case presented Wunderlich's syndrome; 1 had a palpable renal mass; 6 had abdominal pain. All the tumors were confined to the kidney. Thirteen were Robson stage I and 1 stage II. According to the UICC classification, 12 were T1, 1 T2 and 1 T3. All tumors were N0 M0. Patient evaluation included IVP (6), US (12), CT (14) and selective renal arteriography (2). The typical angiographic patterns were not observed in these 2 cases. Concerning the CT findings, in 8 cases (57%) the first diagnosis discarded was that of hypernephroma, although there were also signs suggestive of oncocytoma. Six cases (43%) showed signs indicating oncocytoma as first diagnosis. All patients were submitted to radical nephrectomy, which achieved good results in all cases at 7 months' to 5 years' follow up.
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PMID:[Renal oncocytoma: report of 14 cases and review of the literature]. 794 97

Renal oncocytoma is a benign neoplasms arising from cells of the distal renal tubule. They acount for 3-7% of all renal tumors. most are incidental findings. Differential diagnosis with renal cells carcinoma is often difficult. Here we report a case of big renal oncocytoma as an incidental finding while performing an abdominal ultrasound in a patient with low abdominal pain. We also review the diagnostic an therapeutic approach in this kind of malignancies.
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PMID:[Giant renal oncocytoma]. 1630 13

A 59-year-old woman presented with abdominal pain and a palpable abdominal mass. Initial imaging revealed a 14cm solid, enhancing renal mass and suspicion for liver and bone metastases. Family history included a brother with clear cell renal cell carcinoma and mother with glioblastoma multiforme. After liver biopsy was inconclusive, she underwent radical nephrectomy with final pathologic diagnosis of oncocytoma. Renal oncocytoma is the most common benign renal tumor but remains difficult to distinguish clinically and radiographically from renal cell carcinoma. Should urologists use renal mass biopsy even more frequently prior to surgical intervention?
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PMID:Palpable Abdominal Mass is a Renal Oncocytoma: Not All Large Renal Masses are Malignant. 3148 67