A nurse checks Francis’s respiration rate as part of a diagnostic exam for a suspected cancerous tumor on his lung. Which additional procedures would be most helpful to complete the diagnostic exam and identify the cancer?

A radiograph can show the location and appearance of an abnormal mass in the lung. A biopsy takes a tissue sample so it can be examined for cancer cells; together, these procedures help identify the cancer. Blood pressure measurement and lumbar puncture do not directly diagnose a lung tumor.

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