A/an is a surgery in which a wedge-shaped piece of cancerous lung tissue is removed. a. wedge resection b. lobectomy c. pneumonectomy d. video-assisted thoracic surgery

The correct answer is A, wedge resection. 
Wedge resection is a surgical procedure to remove a triangular shaped slice of tissue. It may be used to remove tumor or some type of tissue that requires removal and typically includes small amount of normal tissue around it. It involves removing the cancerous cells in the lung as well as removing a margin surrounding healthy heart tissues. 

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