A question mark on a lung nodule on an imaging report means that it may be a lung nodule and further testing is needed to make a definitive diagnosis. If there is a question mark on a lung nodule on the imaging report, it means that a lung nodule is suspected, but due to the complexity of the situation, which may also be caused by other reasons such as a vascular cross-section, it is not possible to make a definitive diagnosis directly from the imaging presentation, and can only give the most probable preliminary diagnosis with the addition of a question mark. In such cases, the presence of a lung nodule can be clarified by a thin-layer (1 mm) CT scan of the chest or a target CT scan of the chest (1024 CT). In addition, lung nodules can be caused by a variety of reasons, such as infections, chronic inflammatory nodules, tumors, etc. Further clinical symptoms or examinations are needed to clarify the nature of the nodules for prompt treatment. If lung nodules are found, it is recommended to seek medical attention promptly, complete the examination according to the doctor’s recommendation to clarify the cause of the disease and follow the doctor’s instructions for treatment.