The primary site is identified through a combination of diagnostic tools and techniques:
Imaging Tests: Techniques like X-rays, CT scans, MRI, and PET scans can help locate the primary tumor. Biopsy: Removing a sample of tissue for examination under a microscope. Laboratory Tests: Blood and other bodily fluids can provide clues about the primary site. Endoscopic Procedures: Using a scope to view internal organs and obtain tissue samples.
