Conversation: The conversation between human and AI assistant.
[|Human|] Hello, I was found to have a 2.9 x 2.6 cm renal mass on my left kidney after having a US, CT with contrast and another CT w/ and w/o contrast. My Urologist has stated that from the CT w/ and w/o contrast that the imaging went from 20 to 32 but he wants me to wait 4 months and have a MRI. Is that ok? There was another MD in my apt after the scan and he stated that I may have needed a biopsy.
[|AI|]  Generally such masses are considered malignant if not proved otherwise. Studies have shown it's better to remove them directly rather than biopsy as biopsy may itself open up the mass leading to spread. Nowadays most urologist if lesion is solid and shown growth favor removing it. At size of 3 CMS there are chances that even good part of kidney can be saved. Rather than biopsy opt for PET scan and then decide. Please feel free to get benefits of premium category to get detailed answer.