How long does it take for CT review for patients suspected of lung cancer? Due to patient’s nervousness, it is often less than a month to review, which is incorrect but will be harmful because radiation is a harmful test to human body. Therefore, a review in 3 months is usually enough for patients suspected of lung cancer. According to the growth rate of lung nodules, we can judge the growth rate and multiplication time of lung nodules to determine the benignity and malignancy of lung nodules, but this is not absolute. Some lung nodules, which have not changed significantly after 3 years of observation, are diagnosed as lung cancer after surgery. Therefore, judging the benignity and malignancy based on the growth rate is not entirely correct, but can only be used as a reference. If the tumor cannot be ruled out, surgical biopsy is recommended to clarify the diagnosis as soon as possible. The so-called multiplication time of nodules refers to the time required to double the volume of nodules. This is a frequent method to determine the benignity and malignancy. Different types of lung cancer have different doubling times Small cell lung cancer has a doubling time of 35 days; squamous carcinoma has a doubling time of 100 days; large cell carcinoma has a doubling time of 120 days; adenocarcinoma has a doubling time of 180 days; and bronchoalveolar carcinoma has a doubling time of 360 to 800 days.