Whether a lung nodule 5mm needs treatment or not needs to be decided according to the benign or malignant nature of the nodule, if it is a benign nodule, observation and follow-up is recommended; if it is a malignant nodule, timely biopsy or resection is recommended.
Lung nodule is an imaging definition of a round, or round-like, lesion with a diameter of 5mm found on CT. If the edges of the nodule are found to be smooth on CT and clearly demarcated from the surrounding lung tissue, it can be observed and followed up, and if the morphology changes during the regular review period, it is recommended that a puncture biopsy be performed in a timely manner to clarify the nature of the nodule.
However, if the CT examination reveals irregular nodule shape, burr sign, lobulation sign and other malignant nodule manifestations, or if the nodule is found to be significantly larger and the morphology changes significantly during regular follow-up, then puncture biopsy is needed to clarify the nature of the nodule in time, and surgical resection is needed if necessary.
It is important to note that if the patient is healthy and younger than 45 years old, a CT scan of the lungs once a year is sufficient. However, if the patient is older than 45 years old, has a history of smoking, a history of tumor or family history of tumor, high-risk occupational exposure, a history of chronic lung diseases such as chronic obstructive pulmonary disease (COPD), pulmonary fibrosis, etc., it is recommended to shorten the review time and increase the frequency of review.
It is recommended that patients with lung nodule 5mm should actively seek treatment in time, choose appropriate treatment under the guidance of the doctor, and undergo regular review.