Renal Mass Biopsy (CT guided Kidney Tumor Biopsy)
Tissue sampling of the renal lesion is performed under image guidance, commonly CT or ultrasound guidance. It is often performed on outpatient basis.
The patient lies on the procedure table.
The initial CT images are obtained.
The location of the lesion in the kidney is determined.
The biopsy device cannula entry site is marked on the skin.
Then, the access site is sterilized.
The access area is covered by a surgical drape.
The skin and renal capsule are numbed with a local anesthetic at the access site.
A very small nick may be made in your skin to make it easier to pass the needle into the renal lesion.
Then, the tip of a cannula is placed within the renal lesion under CT guidance.
The biopsy device is prepared, and then advanced through the biopsy cannula into the lesion. Subsequently, multiple passes are performed to obtain required tissue samples.
The entire procedure usually takes between 30 to 60 minutes.
At the end of the procedure, the biopsy cannula is removed, and pressure is applied to stop any bleeding.
Subsequently, dressing is applied at the opening on the skin.
Benefit: Obtaining tissue samples for pathology work up which is the gold standard of diagnosis.
Risks: Bleeding, infection, non-target organ injury
Alternative options: surgical tissue sampling or not performing any tissue sampling.
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