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Ultrasmall intrapulmonary lymph node: usual high-resolution computed tomographic findings with histopathologic
Hiroyuki Ishikawa1, Naoya Koizumi, Tetsuro Morita
1Department of Radiology, Niigata University Hospital, Niigata, Japan. iskw@med.niigata-u.ac.jp
Journal of Computer Assisted Tomography
|June 1, 2007
Summary
High-resolution CT scans reveal ultrasmall intrapulmonary lymph nodes (IPLNs) with typical imaging features that correlate with their pathology. These findings aid in distinguishing IPLNs from other lung nodules.
Area of Science:
- Radiology
- Pulmonary Medicine
- Pathology
Background:
- Intrapulmonary lymph nodes (IPLNs) are common but ultrasmall IPLNs can be challenging to characterize.
- High-resolution computed tomography (HRCT) is crucial for evaluating small lung nodules.
Purpose of the Study:
- To correlate HRCT findings of ultrasmall IPLNs (3-6 mm) with histopathologic results.
- To clarify the characteristic imaging features of these small IPLNs.
Main Methods:
- HRCT scans of 7 lobectomy specimens with 14 identified IPLNs were analyzed.
- Imaging findings were compared with detailed histopathologic examination.
Main Results:
- Most ultrasmall IPLNs appeared as well-defined solid nodules.
- Nodule location near the pleura and association with linear opacities (thickened interlobular septa) were common.
- Proximity to peripheral pulmonary veins was also frequently observed.
Conclusions:
- Ultrasmall IPLNs exhibit characteristic HRCT findings that align with their histopathologic features.
- These imaging patterns can help differentiate ultrasmall IPLNs from other pulmonary lesions.
