"If you're looking for tumors, or doing tissue diagnosis, you often do several needle biopsies," Dr. Breger said.

In the case of cancer, this represents the tissue diagnosis required for most treatment protocols.

Generally, a "tissue diagnosis" (from a biopsy) is considered essential for the proper identification of cancer.

Of course you'll need tissue diagnosis to confirm it's benign.

Improved methods of obtaining a tissue diagnosis are therefore becoming essential to the management of biliary tract strictures.

A tissue diagnosis is clearly required to provide a rational basis for treatment.

Some are still awaiting adequate clinical evaluation but even with currently available techniques it should be possible to obtain a tissue diagnosis in most patients.

He noted that "when cancer becomes a microscopic disease, there must be tissue diagnosis in the operating room".

Such bleeding is followed by further evaluation leading to a tissue diagnosis, usually done by a dilatation and curettage (D&C).