How is a lung nodule monitored or treated?

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1. 1

   Pulmonary Nodules.

   The New England journal of medicine (Callister & Silvestri)Published Sep 1, 2026Checked Oct 12, 2026

   “Management strategies differ according to the type of nodule. A comparison of current and previous imaging studies, when available, is essential to assess the risk of the nodule being malignant. Solid nodules that have been stable for 2 years are considered to be benign, whereas subsolid nodules require a longer period of stability to be considered benign. Prediction models to stratify the risk of the nodule being malignant can be used to guide the management of solid nodules. Computed tomographic (CT) surveillance is indicated for low-risk nodules; positron-emission tomography-CT, biopsy, or both for intermediate-risk nodules; and surgical resection for selected high-risk nodules. Subsolid nodules are often slower growing than solid nodules but are associated with a higher risk of being malignant, especially if a solid component develops or progressively enlarges. Biopsy methods include transthoracic needle biopsy and navigational bronchoscopy. Optimal overall management balances timely diagnosis in persons who have cancer with the avoidance of unnecessary invasive procedures in persons who have benign disease.”

2. 2

   Biology, detection, and management of incidental pulmonary nodules: the emerging role of targeted treatments. A review of the current literature and future perspectives.

   Lung cancer (Amsterdam, Netherlands) (Soo et al.)Published Aug 3, 2026Checked Oct 12, 2026

   “Lung cancer is the leading cause of cancer-related deaths globally, and early diagnosis and treatment are important for improving prognosis. Pulmonary nodules (PNs) are small pulmonary lesions frequently identified during clinical practice, with incidental detection increasing due to advances in imaging techniques and the expanded use of computed tomography scans for thoracic evaluation. The majority of incidental PNs (IPNs) are benign, however some represent early-stage lung cancer, therefore distinguishing benign from malignant IPNs is key to improving lung cancer outcomes. Current management guidelines differ by nodule type and involve biopsy to determine the malignancy status of the nodule. Here, we review current knowledge on the classification, prevalence, and detection of PNs, as well as the current management and risk stratification of PNs. We outline the role of oncogenic driver mutations in the pathobiology of PNs and assess current literature on targeted treatment of oncogene-driven PNs. Finally, we discuss evidence gaps and areas for future research.”

3. 3

   Radiologist review at the time of lung nodule referrals saves clinic appointments and fast tracks investigations: results of the outpatient respiratory nodule management (Ornament) study.

   Internal medicine journal (Fielding et al.)Published Jul 20, 2026Checked Oct 12, 2026

   “The radiologist reviewed referral CT scans, blinded to the clinic outcomes. Brock score was calculated before and after radiologist review, and the NLCSP category was assigned to allow 'virtual' triaging. NLCSP Category 1-4 cases were 'virtually' referred back to the GP. Category 5 and 6 cases were triaged for clinic/procedure as urgent/very urgent respectively.ResultsFrom 6 months of referrals, 101 consecutive cases were reviewed in four half-hour meetings with a radiologist, thoracic physician and clinic nurse. Referrals were 52 males and 49 females, the mean age was 67.0 ± 12.0 years, and the mean Brock score was 13.9 ± 13.8. Fifty-four cases (53%) were deemed Category 1-4, needing no appointment. Thirty-three cases were deemed suspicious of lung cancer (NLCSP Category 6), resulting in early 'virtual' appointments saving 37.3 ± 28 days wait time (range 0-89 days). Comparing actual to virtual, clinic numbers saved were 131 (336 vs 205, P ConclusionThis cost-effective strategy demonstrates dual benefits of managing rising referral numbers and fast-tracking urgent cases for procedures.”

4. 4

   Lung nodules: A comprehensive review on current approach and management

   Annals of Thoracic Medicine (Gaga et al.)Published Jan 1, 2019Checked Oct 12, 2026

   “In daily clinical practice, radiologists and pulmonologists are faced with incidental radiographic findings of pulmonary nodules. Deciding how to manage these findings is very important as many of them may be benign and require no further action, but others may represent early disease and importantly early-stage lung cancer and require prompt diagnosis and definitive treatment. As the diagnosis of pulmonary nodules includes invasive procedures which can be relatively minimal, such as bronchoscopy or transthoracic aspiration or biopsy, but also more invasive procedures such as thoracic surgical biopsies, and as these procedures are linked to anxiety and to cost, it is important to have clearly defined algorithms for the description, management, and follow-up of these nodules. Clear algorithms for the imaging protocols and the management of positive findings should also exist in lung cancer screening programs, which are already established in the USA and which will hopefully be established worldwide. This article reviews current knowledge on nodule definition, diagnostic evaluation, and management based on literature data and mainly recent guidelines.”

5. 5

   ACR Appropriateness Criteria® Indolent Lung Cancer.

   Journal of the American College of Radiology : JACR (Expert et al.)Published Aug 10, 2026Checked Oct 12, 2026

   “If the team determines that treatment is necessary, a diagnostic imaging workup and a biopsy are typically indicated and should not be considered part of surveillance. Therefore, this document aims to outline evidence-based guidelines specifically for imaging surveillance of indolent pulmonary nodules in patients for whom the clinical team has chosen to delay intervention. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision process support the systematic analysis of the medical literature from peer reviewed journals. Established methodology principles such as Grading of Recommendations Assessment, Development, and Evaluation or GRADE are adapted to evaluate the evidence. The RAND/UCLA Appropriateness Method User Manual provides the methodology to determine the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where peer reviewed literature is lacking or equivocal, experts may be the primary evidentiary source available to formulate a recommendation.”

6. 6

   Guidelines for the management of pulmonary nodules detected by low-dose CT lung cancer screening 6th edition: compiled by the Japanese Society of CT Screening

   Japanese Journal of Radiology (Ashizawa et al.)Published Dec 5, 2024Checked Oct 12, 2026

   “The main revisions in the 6th edition can be summarized as follows: 1) addition of the section "Recommendations for Low-Dose CT Lung Cancer Screening in Japan"; 2) change in the recommended solid component diameter, and follow-up interval for nodules with a total mean diameter of less than 15 mm and a solid component diameter of less than 8 mm; 3) replacement of the recommended case images; and 4) introduction of the criteria of the Accreditation Council for Lung Cancer CT Screening. This guideline is gradually gaining acceptance in Japan. This guideline should be applied carefully in clinical practice, considering various factors such as the patient's condition.”