, which tells the bone marrow to make more red blood cells. Our kidneys are important, but we actually need less than one complete kidney to function. Tens of thousands of people in the united states are living normal healthy lives with just one kidney. Some people may not have any working kidneys at all, and survive with the help of a medical procedure called dialysis. Dialysis uses a specially designed machine that filters the blood like a real kidney would. Renal cell carcinoma renal cell carcinoma (rcc), also known as renal cell cancer or renal cell adenocarcinoma, is by far the most common type of kidney cancer. About 9 out of 10 kidney cancers are renal cell carcinomas. Although rcc usually grows as a single mass (tumor) within a kidney, sometimes there are 2 or more tumors in one kidney or even tumors in both kidneys at the same time. Some of these cancers are noticed only after they have become quite large, but most are found before they metastasize (spread) to distant organs in the body. Often they are found on ct scans or ultrasounds that are being done for concerns other than kidney cancer. Like most cancers, rcc is hard to treat once it has spread. There are several subtypes of rcc, based mainly on how the cancer cells look under a microscope: clear cell renal cell carcinoma this is the most common form of renal cell carcinoma. About 7 out of 10 people with renal cell carcinoma have this kind of cancer. When seen under a microscope, the cells that make up clear cell rcc look very pale or clear. viagra for sale cheap generic viagra generic viagra online buy viagra buy viagra online buy viagra cheap viagra online buy cheap viagra viagra for sale viagra online Papillary renal cell carcinoma this is the second most common subtype -- about 1 case in 10 is this kind. These cancers form little finger-like projections (called papillae) in some, if not most, of the tumor. Some doctors call these cancers chromophilic because the cells take in certain dyes and look pink under the microscope. Chromophobe renal cell carcinoma this subtype accounts for about 5% (5 cases in hundred) of rccs. The cells of these cancers are also pale, like the clear cells, but are much larger and have certain other features that can be recognized. Collecting duct renal cell carcinoma this subtype is very rare. The major feature is that the cancer cells can form irregular tubes. Unclassified renal cell carcinom. viagra buy pakistan