Perifissural lung nodules (PFNs) are a type of intrapulmonary nodules. They commonly represent intrapulmonary lymph nodes 1. There is some overlap with the term perilymphatic pulmonary nodules since the latter can be perifissural.
PFNs are typically seen as well-circumscribed, smoothly marginated nodules in contact with or closely related to a pulmonary fissure. Most show a triangular, oval, round, rectangular, or dumbbell shape. They may often show a septal attachment to the pleural surface 3.
- 1. Ahn MI, Gleeson TG, Chan IH et-al. Perifissural nodules seen at CT screening for lung cancer. Radiology. 2010;254 (3): 949-56. Radiology (full text) - doi:10.1148/radiol.09090031 - Pubmed citation
- 2. de Hoop B, van Ginneken B, Gietema H et-al. Pulmonary perifissural nodules on CT scans: rapid growth is not a predictor of malignancy. Radiology. 2012;265 (2): 611-6. doi:10.1148/radiol.12112351 - Pubmed citation
- 3. Frank L, Quint LE. Chest CT incidentalomas: thyroid lesions, enlarged mediastinal lymph nodes, and lung nodules. Cancer Imaging. 2012;12 (1): 41-8. doi:10.1102/1470-7330.2012.0006 - Free text at pubmed - Pubmed citation