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Metanephric adenoma (MA) is a rare, benign tumour of the kidney, that can have a microscopic appearance similar to a nephroblastoma (Wilms tumours), [1] or a papillary renal cell carcinoma. It should not be confused with the pathologically unrelated, yet similar sounding, mesonephric adenoma .
The RENAL Nephrometry Scoring System is used to measure the complexity of kidney tumors for determining whether a renal mass is appropriate for partial or radical nephrectomy, and is estimated by CT scan as follows: [7] The nephrometery score takes into account the size of the tumor (Radius), how much of the tumor is inside or outside of the ...
There is a small association between Gartner's duct cysts and metanephric urinary anomalies, such as ectopic ureter and ipsilateral renal hypoplasia. [5] Symptoms of a Gartner's duct cyst include: infections, bladder dysfunction, abdominal pain, vaginal discharge, and urinary incontinence. [6] The size of the cyst is usually less than 2 cm.
This is an accepted version of this page This is the latest accepted revision, reviewed on 21 February 2025. Medical condition Kidney cancer Other names Renal cancer Micrograph showing the most common type of kidney cancer (clear cell renal cell carcinoma). H&E stain. Specialty Oncology nephrology Urology Symptoms Blood in the urine, lump in the abdomen, back pain Usual onset After the age of ...
[citation needed] Indications for surgical resection include obstructive jaundice, an enhancing mural nodule >5 mm, and pancreatic duct dilation (>10 mm). [12] Surgery can include the removal of the head of the pancreas (a pancreaticoduodenectomy), removal of the body and tail of the pancreas (a distal pancreatectomy), or rarely removal of the ...
The collecting ducts from each cluster of nephrons usually drain into an archinephric duct, which is homologous with the vas deferens of amniotes. However, the situation is not always so simple; in cartilaginous fish and some amphibians, there is also a shorter duct, similar to the amniote ureter, which drains the posterior (metanephric) parts ...
[17] [6] [18] Differences in kidney structure are the result of adaptations during evolution to variations in body mass and habitats (in particular, aridity) between species. [ 19 ] [ 20 ] [ 12 ] The cortex and medulla of the kidney contain nephrons , [ 21 ] each of which consists of a glomerulus and a complex tubular system. [ 22 ]
Metanephric dysplastic hematoma of the sacral region (MDHSR) has been described by Cozzutto and Lazzaroni-Fossati in 1980, [1] by Posalaki et al. in 1981 [2] and by Cozzutto et al. in 1982. [3] Three additional cases were seen by Finegold.