my mother...75yrs of age...has been watched by a doctor because of a spot on her kidney.  it has changed in size since last year...not much but enough that he says it is a cancer and a biopsy is necessary....im wondering if it is small enough that it was only watched until this point.  Whatever cancer it is, does it sound like it could be caught early enough?
Hi, Welcome to Chat Doctor forum.  What ever the size of the spot, there will be a definite shape for some cancers, or if it is near to that shape, to exclude the possibility of cancer biopsy may be done.  Otherwise as it starts growing it may start to metastasis to the other places.  If biopsy is done and cancer excluded, there will be no harm, and if positive it can be removed, completely.  Wishing her a quick and complete recovery. Thank you.