This lists the tests frequently used to diagnose cancers. These links provide some information you may find useful.
Having a Bone Marrow Biopsy
Having a Bronchoscopy
Having a Colonoscopy
Having a Cystoscopy
Having an ERCP
Having an FNA (Fine Needle Aspiration)
Having a Gastroscopy
Having a Laparoscopy
Having a Lumbar Puncture
Having a Sigmoidoscopy