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Pharyngeal Cancer (PET Scan)

Pharyngeal Cancer (PET Scan)
Pharyngeal Cancer (PET Scan)

In this positron emission tomography (PET) coronal scan of a patient with a primary cancer of the pharynx, the primary tumor (white) is the area in the center of the neck, highlighted by the use of a contrast medium. The contrast medium has also highlighted a metastatic spread of the cancer to lymph nodes (white) on the left side of the neck (at right in this view from the front). The brain is also highlighted, as are traces of the contrast medium in the kidneys.

DR P. MARAZZI/SCIENCE PHOTO LIBRARY