The kidneys are crucial organs, and any issues with them can be serious.  One unusual case involved a 77-year-old man who experienced sudden, sharp pain in his side.  Doctors quickly sprang into action.  They used a CT scan to get a closer look.  The scan showed a large, oddly shaped growth with thick walls and some calcium deposits.  It seemed to be coming from the lower right part of his kidney.  This was weird because tumors like this are not common in the kidneys.  Most kidney tumors are different and usually start elsewhere in the body.

Doctors then used an MRI to get an even better picture.  The MRI revealed a complex, 16. 3 cm mass pushing against the lower part of the right kidney.  Based on these images, doctors thought it might be a type of kidney cancer that starts as a cyst.  So, they decided to remove the kidney and the adrenal gland on that side.  This is a big operation, but it was necessary to get rid of the tumor.

When they examined the removed tissue, they found a 15 cm cyst.  It was well-defined and had a soft, crumbly texture inside, with lots of bleeding and dead tissue.  Under the microscope, they saw something surprising.  The tumor started in the fat tissue around the kidney, not in the kidney itself.  It was a type of fat tissue cancer called liposarcoma.  This tumor had two parts: a well-differentiated part and a more aggressive, dedifferentiated part.  The aggressive part made up most of the tumor and had large, unusual cells.  The well-differentiated part had fat cells of different sizes and some strange-looking cells.

To confirm their findings, doctors did some special tests.  They found that the tumor cells had too many copies of a gene called MDM2.  This gene is often involved in this type of cancer.  After the operation, the patient was doing well and had no signs of the tumor coming back after six months.

This case is interesting because it shows how tricky it can be to diagnose tumors in the kidney area.  Doctors have to use many tools and tests to figure out what's going on.  It also highlights the importance of quick action and thorough investigation when something unusual is found.  This is a good example of how modern medicine can solve complex health puzzles.

Unusual Tumor: A Kidney Mystery Solved

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