PURPOSE Pathologic stage is the most accurate prognostic factor of renal cell carcinoma. We evaluated whether perirenal fat infiltration is a significant factor in tumors 7 cm or less in size. MATERIALS AND METHODS We retrospectively reviewed the record of 164 cases of tumors 7 cm or less in size. We divided the patients into two groups according to the presence of perirenal fat infiltration ...

Regional differences in free fatty acid (FFA) handling contribute to diseases associated with particular fat distributions. As cultured rat preadipocytes became differentiated, FFA transfer into preadipocytes increased and was more rapid in single perirenal than in epididymal cells matched for lipid content. Uptake by human omental preadipocytes was greater than uptake by abdominal subcutaneous...

1. Over- or undernutrition of newborn mice was caused by suckling in litters consisting initially of four or eighteen pups. After weaning mice were fed ad lib. At 13 weeks of age some mice from large litters received gold thioglucose (GTG: 600 mg/kg intraperitoneally) to induce hyperphagia, and mice were killed at 13, 19.5, 26, 39 and 52 weeks. 2. Total carcass lipid and the size and number of ...

Lymphangioleiomyomatosis (LAM) is a rare multisystem disorder of unknown etiology, primarily affecting women. The disease mainly affects the lung and is characterized histologically by a diffuse proliferation of smooth muscle cells in the walls of the airways, venules and lymphatic vessels. Proliferation of these cells leads to vascular and airway obstruction, cyst formation and a progressive d...

INTRODUCTION Nerve sheath tumours of the kidney are particularly rare and, in the few reported cases, are all situated in the hilar region. CASE PRESENTATION We describe the case of a tumour presenting towards the lateral border of the ventral aspect of the mid-zone of the kidney. This was a spindle cell lesion in which the cells strongly and diffusely expressed cytokeratins, but were negativ...

Partial or complete ureteral disruption is often caused by trauma, but can also be a consequence of surgical or other diagnostic procedures. The spontaneous rupture of the ureter is a rare condition, but the most frequent cause is a concrement in the pyelon or ureter. Typical signs for this condition are the absence of renal parenchymal damage, perirenal collection of the urine and absence of h...

Spontaneous renal hemorrhage is an unusual complication of urinary tract infection. A 56-year-old man, diabetic with single functional kidney was admitted with fever and abdominal pain for one day. He had pyuria and an obstructed renal moiety due to a lower ureteric stone. On evaluation, he was found to have a left perirenal hemorrhage. Drainage of the obstructed system was performed and hemorr...