Findings
Sagittal & axial CT images, sagittal, axial & coronal T1, T2, PDFS MRI images of knee joint reveals abnormal frond like soft tissue showing fat signal intensity and attenuation predominantly filling the suprapatellar pouch with mild knee joint synovitis and associated osteoarthritis of knee joint.
Diagnosis
Lipoma arborescens
Summary
Lipoma arborescens is a non-neoplastic benign villous proliferation of synovium with replacement of the subsynovial connective tissue by mature fat cells. It is thought to be a nonspecific reactive response to chronic synovial irritation, whether from mechanical or inflammatory insults. Lipoma arborescens is nearly always associated with underlying degenerative joint disease, chronic rheumatoid arthritis, or prior trauma. An effusion is typically present, and can be produced by the lesion or from the underlying arthritis. Management includes synovectomy when indicated and treatment for underlying joint disorder.
Further reads
- Coll, J. P., Ragsdale, B. D., Chow, B., & Daughters, T. C. (2011). Best cases from the AFIP: lipoma arborescens of the knees in a patient with rheumatoid arthritis. Radiographics : a review publication of the Radiological Society of North America, Inc, 31(2), 333–337. https://doi.org/10.1148/rg.312095209
- https://radsource.us/lipoma-arborescens/
Have a vision to collaborate?
Let's Connect
Try a complimentary trial to have a glimpse of our services
