Limits...
MRI characteristics of cysts and "cyst-like" lesions in and around the knee: what the radiologist needs to know.

Perdikakis E, Skiadas V - Insights Imaging (2013)

Bottom Line: A variety of benign cystic or "cyst-like" lesions may be encountered during a routine magnetic resonance imaging (MRI) of the knee.In addition, normal anatomic bursae and recesses may be misdiagnosed as an intra-articular cystic lesion when they are distended.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.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, 412 General Military Hospital-212 Mobile Army Surgical Hospital, Terma Lefkou Pyrgou, Xanthi, 67100, Greece, perdikakis_ev@yahoo.gr.

ABSTRACT

Objectives and methods: A variety of benign cystic or "cyst-like" lesions may be encountered during a routine magnetic resonance imaging (MRI) of the knee. These lesions comprise a diverse group of entities from benign cysts to complications of underlying diseases. In addition, normal anatomic bursae and recesses may be misdiagnosed as an intra-articular cystic lesion when they are distended. 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.

Results: 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.

Discussion: For 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.

Teaching points: • Cystic lesions are common in knee MRI and the commonest, the Baker's cyst, has an incidence of 38 %. • Synovial cysts, meniscal cysts, normal knee bursae and recesses have characteristic MR appearances. • Miscellaneous "cyst-like" lesions may require a more dedicated MR protocol for a correct diagnosis.

No MeSH data available.


Related in: MedlinePlus

MCL bursitis. The coronal fat saturated proton density weighted image demonstrates a small fluid collection between the deep MCL (meniscofemoral ligament: grey arrow, meniscotibial ligament: black arrow) and the superficial portion (white arrow) of the MCL
© Copyright Policy - OpenAccess
Related In: Results  -  Collection


getmorefigures.php?uid=PMC3675245&req=5

Fig18: MCL bursitis. The coronal fat saturated proton density weighted image demonstrates a small fluid collection between the deep MCL (meniscofemoral ligament: grey arrow, meniscotibial ligament: black arrow) and the superficial portion (white arrow) of the MCL

Mentions: The medial collateral ligament bursa lies vertically between the superficial and deep layer of MCL [38–42]. MCL bursitis as an isolated finding is extremely rare, with most cases associated with arthritides and medial intra-articular pathology. MCL bursitis on MR images is demonstrated as a vertically elongated, well-defined fluid collection between the superficial and deep layer of the MCL [38–42]. Separate femoral and tibial components may be observed, and this has also been proved in cadaveric studies. Meniscal cyst and ganglion cyst should also be considered in the differential diagnosis of MCL bursitis (Fig. 18).Fig. 18


MRI characteristics of cysts and "cyst-like" lesions in and around the knee: what the radiologist needs to know.

Perdikakis E, Skiadas V - Insights Imaging (2013)

MCL bursitis. The coronal fat saturated proton density weighted image demonstrates a small fluid collection between the deep MCL (meniscofemoral ligament: grey arrow, meniscotibial ligament: black arrow) and the superficial portion (white arrow) of the MCL
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3675245&req=5

Fig18: MCL bursitis. The coronal fat saturated proton density weighted image demonstrates a small fluid collection between the deep MCL (meniscofemoral ligament: grey arrow, meniscotibial ligament: black arrow) and the superficial portion (white arrow) of the MCL
Mentions: The medial collateral ligament bursa lies vertically between the superficial and deep layer of MCL [38–42]. MCL bursitis as an isolated finding is extremely rare, with most cases associated with arthritides and medial intra-articular pathology. MCL bursitis on MR images is demonstrated as a vertically elongated, well-defined fluid collection between the superficial and deep layer of the MCL [38–42]. Separate femoral and tibial components may be observed, and this has also been proved in cadaveric studies. Meniscal cyst and ganglion cyst should also be considered in the differential diagnosis of MCL bursitis (Fig. 18).Fig. 18

Bottom Line: A variety of benign cystic or "cyst-like" lesions may be encountered during a routine magnetic resonance imaging (MRI) of the knee.In addition, normal anatomic bursae and recesses may be misdiagnosed as an intra-articular cystic lesion when they are distended.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.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, 412 General Military Hospital-212 Mobile Army Surgical Hospital, Terma Lefkou Pyrgou, Xanthi, 67100, Greece, perdikakis_ev@yahoo.gr.

ABSTRACT

Objectives and methods: A variety of benign cystic or "cyst-like" lesions may be encountered during a routine magnetic resonance imaging (MRI) of the knee. These lesions comprise a diverse group of entities from benign cysts to complications of underlying diseases. In addition, normal anatomic bursae and recesses may be misdiagnosed as an intra-articular cystic lesion when they are distended. 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.

Results: 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.

Discussion: For 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.

Teaching points: • Cystic lesions are common in knee MRI and the commonest, the Baker's cyst, has an incidence of 38 %. • Synovial cysts, meniscal cysts, normal knee bursae and recesses have characteristic MR appearances. • Miscellaneous "cyst-like" lesions may require a more dedicated MR protocol for a correct diagnosis.

No MeSH data available.


Related in: MedlinePlus