F-18 Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography Imaging in Left Thigh Intramuscular Myxoma

Ho, Linh; Wassef, Heidi; Henderson, Robert W.; Seto, John

doi:10.1097/rlu.0b013e31819a204a

Cited by 12 publications

(6 citation statements)

References 8 publications

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“…Soft tissue myxomas are a benign connective tissue with mucinous components. The mucinous components result in a lower than muscle attenuation of CT. Myxomas may be FDG-avid (9).…”

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confidence: 99%

Mazabraud’s Syndrome Mimicking Metastases on FDG PET/CT in a Patient With Colon Cancer

et al. 2018

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Mazabraud's, a syndrome consisting of fibrous dysplasia and soft tissue myxomas, is a rare disorder with less than 100 cases reported in the literature. Appearance of lesions in Mazabraud's syndrome on FDG PET/CT scan in an oncological scenario can be misinterpreted as malignancy. We present the case of a 69-year-old woman, diagnosed with metastatic colon carcinoma and suspected osseous as well as soft tissue metastases, who was later found to have concomitant Mazabraud's syndrome. This case describes the diagnostic dilemma associated with this unusual entity and importance of differentiating benign and malignant etiologies on FDG PET/CT scan.

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“…Soft tissue myxomas are a benign connective tissue with mucinous components. The mucinous components result in a lower than muscle attenuation of CT. Myxomas may be FDG-avid (9).…”

mentioning

confidence: 99%

Mazabraud’s Syndrome Mimicking Metastases on FDG PET/CT in a Patient With Colon Cancer

et al. 2018

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“…In the present case, PET revealed an increased uptake of FDG with a maximum SUV of 1.78. Only one case of a positive FDG PET in intramuscular myxoma has been reported so far [2]. In that report, the maximum SUV was 1.8 and FDG activity was predominantly located in the periphery of the lesion.…”

Section: Discussionmentioning

confidence: 93%

“…The coexistence of intramuscular myxoma and skeletal fibrous dysplasia is known as Mazabraud’s syndrome [1]. To the best of our knowledge, F-18 fluorodeoxyglucose (FDG) positron emission tomography (PET)/computed tomography (CT) findings of intramuscular myxoma have been mentioned in one prior publication [2]. Here, we describe a case of intramuscular myxoma with a mild FDG uptake and discuss its clinicopathologic and radiologic features.…”

Section: Introductionmentioning

confidence: 99%

FDG PET/CT and MR imaging of intramuscular myxoma in the gluteus maximus

Nishio

Naito

2012

World J Surg Onc

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Intramuscular myxoma is a rare benign soft tissue tumor which may be mistaken for other benign and low-grade malignant myxoid neoplasms. We present the case of a 63-year-old woman with an asymptomatic intramuscular myxoma discovered incidentally on a whole-body F-18 fluorodeoxyglucose (FDG) positron emission tomography (PET)/computed tomography. PET images showed a mild FDG uptake (maximum standardized uptake value, 1.78) in the left gluteus maximus. Subsequent magnetic resonance (MR) imaging revealed a well-defined ovoid mass with homogenous low signal intensity on T1-weighted sequences and markedly high signal intensity on T2-weighted sequences. Contrast-enhanced MR images showed heterogeneous enhancement throughout the mass. The diagnosis of intramuscular myxoma was confirmed on histopathology after surgical excision of the tumor. The patient had no local recurrence at one year follow-up. Our case suggests that intramuscular myxoma should be considered in the differential diagnosis of an oval-shaped intramuscular soft tissue mass with a mild FDG uptake.

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“…In the case of our patient, the tumor did present with a fat layer surrounding it, but we did not observe enhancement in the adjacent muscles. Previous studies have characterized myxomas under Fluorine-18 fluorodeoxyglucose positron emission tomography-computed tomography (F-18 FDG PET-CT), as a mass with low uptake, with SUV values ranging from 1.3 to 3.2 for diagnostic and control of residual disease purposes [15], [16], [17].…”

Section: Discussionmentioning

confidence: 99%

A case of a myxoma within the obturator externus muscle

Belzarena

Wright

Joyce

2019

Radiology Case Reports

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Intramuscular myxomas (IM) are rare benign tumors of mesenchymal origin. These tumors have a high myxoid content and a nonspecific radiologic appearance. Here we describe the case of a patient with an IM in an infrequent location; within the obturator externus muscle. A singular approach was utilized for the resection of this tumor in such rare location. Despite IM being benign tumors, patients may require a surgical excision due to the difficulty of differentiating these tumors, with unreliable imaging features, from other myxoid soft tissue masses.

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F-18 Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography Imaging in Left Thigh Intramuscular Myxoma

Cited by 12 publications

References 8 publications

Mazabraud’s Syndrome Mimicking Metastases on FDG PET/CT in a Patient With Colon Cancer

Mazabraud’s Syndrome Mimicking Metastases on FDG PET/CT in a Patient With Colon Cancer

FDG PET/CT and MR imaging of intramuscular myxoma in the gluteus maximus

A case of a myxoma within the obturator externus muscle

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