CTICasesFat Necrosis of Lipomatous Hypertrophy of the Interatrial Septum
Imaging findings
A patient with lipomatous hypertrophy of the interatrial septum and aortic and mitral valve disease underwent operative valve repair, during which the interatrial septum was cut. The post-operative CT shows a new peripheral rim of increased density around the still centrally fatty septum with a few internal striations, a change seen on both chest and abdominal imaging.
Key takeaways
Lipomatous hypertrophy of the interatrial septum that is surgically disrupted can undergo fat necrosis, producing a benign peripheral rim of higher attenuation (or enhancement/cyst-like change) around a fatty center, analogous to the classic appearance of fat necrosis elsewhere such as the breast. Recognizing this benign post-operative evolution avoids misinterpretation of the new peripheral density.
AI-assisted summary — may contain errors. Verify against the source video. Learn more
More from this webinar
- Pulmonary Veno-Occlusive Disease / Pulmonary Capillary HemangiomatosisVascular
- Voriconazole-Induced Skeletal FluorosisMetabolic
- Langerhans Cell HistiocytosisNeoplastic
- Pulmonary Light-Chain Deposition Disease in Waldenstrom MacroglobulinemiaMetabolic
- Sarcoid-Lymphoma Syndrome (Diffuse Large B-Cell Lymphoma)Neoplastic
- Intraparenchymal Chest Tube Placement with Pulmonary HemorrhageIatrogenic
- Intravascular Pulmonary Metastases from OsteosarcomaNeoplastic
- Pulmonary Coccidioidomycosis in a Transplant RecipientInfection
See all cases from December 3, 2020 →
Related Artifact cases
- Pulmonary Biopsy Tract Sealant Mimicking a Lesion
- Pneumomediastinum from the Macklin Phenomenon after Lung Transplant
- Pneumothorax Ex Vacuo after Endobronchial Valve Placement
- Milk of Calcium Pleural Collection
- Minute Pulmonary Meningothelial-Like Nodules
- Exuberant Mediastinal Fat Necrosis after Lung Transplant