Magnetic resonance imaging of juxta-articular myxoma

King, David G.; Saifuddin, Asif; Preston, H. V.; Hardy, G. J.; Reeves, B. F.

doi:10.1007/bf00198080

Cited by 22 publications

(13 citation statements)

References 5 publications

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“…Septa and a thick capsule are uncommon. Contrast enhancement can be heterogeneous or serpentine [15,16]. Aspiration produces thick, gelatinous fluid similar to that obtained in case 1.…”

Section: Discussionsupporting

confidence: 58%

Non-communicating intramuscular ganglia

1998

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Intramuscular ganglia are rare. Most of the previously reported cases were connected with an adjacent joint. We present the imaging findings in three patients who had intramuscular ganglia that were not connected with a joint. Magnetic resonance showed a septated, encapsulated mass that was isoor hypointense to muscle on T1-weighted and hyperintense on T2-weighted images. A post-contrast T1-weighted scan in one patient showed minimal capsular enhancement. Ultrasound performed in one case showed an encapsulated, anechoic mass.

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“…Septa and a thick capsule are uncommon. Contrast enhancement can be heterogeneous or serpentine [15,16]. Aspiration produces thick, gelatinous fluid similar to that obtained in case 1.…”

Section: Discussionsupporting

confidence: 58%

Non-communicating intramuscular ganglia

1998

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“…In the benign category, ganglia form a significant component of myxoid lesions and can be confused with myxomas even on histology [2,8]. Although myxomas are more likely to be intramuscular, extramuscular myxomas [1,2,22] and intramuscular ganglia [15,19,23,24] are recognised in the literature, albeit they are uncommon. Perilesional oedema is not a specific finding for myxomas.…”

Section: Discussionmentioning

confidence: 99%

Soft tissue masses with “cyst-like” appearance on MR imaging: distinction of benign and malignant lesions

et al. 2006

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The purpose of this study was to assess the reliability of MR imaging features in distinguishing between benign and malignant soft tissue masses that have a "cyst-like" appearance (hypointense to muscle on T1-weighted and hyperintense on T2-weighted or fluid-sensitive MR sequences). MR imaging features of 40 patients with histologically proven soft tissue masses (27 benign and 13 malignant lesions) that were hypointense to muscle on T1-weighted and hyperintense on T2-weighted or fluid-sensitive MR sequences were analysed to see if a distinction could be made between benign and malignant lesions. There were 23 females and 17 males (mean age, 56 years; age range, 23-82 years). MR imaging features analysed for statistical significance included lesion size, lesion homogeneity, presence of lobulation, depth in relation to fascia and border definition. Clinical assessment included the age and sex of the patient and location of the lesion. Statistically significant MR imaging features favouring a diagnosis of a malignant lesion included larger average dimension of the mass (P < or = 0.004), larger greatest dimension of the mass (P < or = 0.028) and heterogeneity of the lesion on T1-weighted sequences (P = 0.017). The most statistically significant predictor of malignancy was the larger average dimension of the mass.

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“…Most lesions present as a palpable swelling or mass, sometimes associated with pain or tenderness. Although their size usually varies from 2.0 to 6.0 cm, some may enlarge very rapidly, reaching 12 cm at the time of excision [1, 2, 4, 5, 6]. The pathogenesis is not clear, but trauma, for instance meniscal tear, and osteoarthritis may play a significant role in the development of JAM.…”

Section: Discussionmentioning

confidence: 99%

“…On gross pathological examination, most lesions appear mucoid, myxoid, gelatinous or slimy (77%) with a silvery or pearly white to yellow color [1, 2, 5]. Histologically, JAMs are composed of loosely arranged spindle-like cells in a hypovascular myxoid matrix, resembling an intramuscular myxoma [1, 6].…”

Section: Discussionmentioning

confidence: 99%

Juxta-articular myxoma of the knee in a 5-year-old boy: a case report and review of the literature (2009: 12b)

et al. 2010

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Juxta-articular myxoma (JAM) is a relatively rare variant of myxoma that occurs in the vicinity of large joints. It is composed of fibroblast-like cells that produce an excessive amount of glycosaminoglycans rich in hyaluronic acid. The peak incidence is between the 3rd and 5th decades of life. In this report we describe an extremely rare case of JAM in the knee of a 5-year-old child. The clinical presentation, radiological features and histopathologic findings are described, and the relevant literature is reviewed.

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Magnetic resonance imaging of juxta-articular myxoma

Abstract: We have described the MRI features of a juxta-articular myxoma. The imaging features are similar to those of intramuscular myxoma. The lesions are differentiated by their location.

Cited by 22 publications

References 5 publications

Non-communicating intramuscular ganglia

Non-communicating intramuscular ganglia

Soft tissue masses with “cyst-like” appearance on MR imaging: distinction of benign and malignant lesions

Juxta-articular myxoma of the knee in a 5-year-old boy: a case report and review of the literature (2009: 12b)

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