Lawton, OK
A 50-year-old female asked:

Ct shows 2 mm & smaller indeterminant pulmonary nodules, in the right lower lobe. tiny subpleural lymph nodes along the fissures. what causes this?

2 doctor answers2 doctors weighed in
Dr. Jeff Durgin
Surgery 22 years experience
Pulmonary nodule: Scarring, infection, or benign granulomatous disease can cause small lung nodules. When they are very small such as 2 mm they cannot be easily characterized on ct scan and normally it suggested for a repeat ct of the thorax in 3 to 6 months to monitor any growth or progression of disease. If the findings are stable it suggest a benign cause if there is enlargement then a pet scan or biopsy may be indicated.
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Dr. Christian Schultheis
Hematology and Oncology 26 years experience
A lot of things: If just 2 mm, i would just monitor with a ct scan every 6 months for a year and then every year thereafter. Possibilties include exposure to fungus, old infection, dust or malignancy but this is less likely. Hope this helps.
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Mar 12, 2020


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