This CT scan of the upper chest (thorax) shows a malignant thyroid tumor (cancer). The dark area around the trachea (marked by the white U-shaped tip of the respiratory tube) is an area where normal tissue has been eroded and died (necrosis) as a result of tumor growth.

Acquired Date: 1/1/1997 12:00:00 AM Acquired From: Mosby Publishing Company

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