1.To know the different benign cystic lesion in and around the knee and how to make differential diagnosis. 2. To describe these lesions with the correct terminology.
During routine knee MRI, a variety of cystic lesions may be encountered. The majority of these lesions are benign. However it can create a diagnostic difficulty. We can simplify the proses by dividing the lesions in: meniscal, synovial, ganglion and intra osseous cyst.
Findings and procedure details:
Meniscal cysts are usually the consequence of meniscal tear and accumulation of joint fluid within the meniscus (intra meniscal) or nearby the meniscus (para-meniscal). These cysts are frequently encountered in horizontal tears of the anterior horns. On MRI it shows as polylobular cystic lesion with[...]
For accurate assessment of the “cystic processes ” of the knee joint, a radiologist should be able to recognize characteristic MRI features that help to establish the accurate diagnosis and thus guiding specific therapy and avoiding unjustified procedures like biopsies or arthroscopy.
Dr. Hajer Chennoufi Departement of Radiology Military Hospital of tunis Tunisia
1. Perdikakis E, Skiadas V. MRI characteristics of cysts and “cyst-like” lesions in and around the knee: what the radiologist needs to know. Insights into Imaging. 2013;4(3):257-72. 2.MRI features of cystic lesions around the knee. M.D.Marra, The Knee, 2008. 3.MR imaging of cysts, ganglia and bursae[...]