Synovial cysts are defined as juxta-articular fluid collections that are lined by synovial cells. Similarly, “cyst-like” lesions were subclassified into the following: (1) normal knee bursae, (2) normal knee recesses and (3) miscellaneous cyst-like lesions. For easier classification purposes, benign cysts were subdivided into categories as following: (1) synovial cysts, (2) ganglion cysts, (3) meniscal cysts and (4) intraosseous cysts. This article is intended to be a comprehensive pictorial review of the most common and uncommon benign cystic and “cyst-like” lesions in and around the knee joint. It is of paramount importance for the radiologist to be aware of the MRI features because understanding the spectrum of appearances of the various benign cystic lesions is vital for optimal patient management. ![]() Knowledge of the common anatomical locations and appearances of bursae, recesses, cysts and ganglia is necessary so that radiologists do not misinterpret these benign entities as soft-tissue tumours. The vast majority of these lesions are benign, ranging from benign cysts to complications of underlying diseases and many of them demonstrate characteristic features on MRI, thus allowing a confident diagnosis to be made. post-traumatic, in sport injuries, in rheumatological disorders, in oncological imaging), the number of incidental cystic and “cyst-like” lesions in and around the knee joint found on routine knee MRI scans has also increased. Given the fact that magnetic resonance imaging (MRI) is being performed more frequently for assessment of the knee joint (e.g. Miscellaneous “cyst-like” lesions may require a more dedicated MR protocol for a correct diagnosis.Synovial cysts, meniscal cysts, normal knee bursae and recesses have characteristic MR appearances.Cystic lesions are common in knee MRI and the commonest, the Baker’s cyst, has an incidence of 38 %. ![]() Discussionįor accurate assessment of the “cystic structure”, a radiologist should be able to identify typical MRI patterns that contribute in establishing the correct diagnosis and thus guiding specific therapy and avoiding unwarranted interventional procedures such as biopsy or arthroscopy. This article includes a comprehensive pictorial essay of the characteristic MRI features of common and uncommon benign cysts and “cyst-like” lesions in and around the knee joint. However, the majority of the aforementioned lesions have characteristic MR appearances that allow a confident diagnosis, thus obviating the need for additional imaging or interventional procedures. In addition, normal anatomic bursae and recesses may be misdiagnosed as an intra-articular cystic lesion when they are distended. These lesions comprise a diverse group of entities from benign cysts to complications of underlying diseases. A variety of benign cystic or “cyst-like” lesions may be encountered during a routine magnetic resonance imaging (MRI) of the knee.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |