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

Nishio, Jun; Naito, Masatoshi

doi:10.1186/1477-7819-10-132

Cited by 19 publications

(4 citation statements)

References 13 publications

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“…On the other hand, intramuscular myxoma is the most common benign myxoid neoplasm and reveals low to intermediate signal intensity on T1-weighted images and markedly high signal intensity on T2-weighted images. Following contrast administration, the lesion usually shows heterogeneous internal enhancement with/without peripheral enhancement with occasional fine internal septa (12). We therefore suggest that the magnetic resonance appearance of SAM is similar to that of intramuscular myxoma.…”

Section: Discussionmentioning

confidence: 72%

Superficial Angiomyxoma of the Wrist: Case Report and Literature Review

Chijiiwa

Nagano

Nishio

2023

In Vivo

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Background/Aim: Superficial angiomyxoma (SAM) is a rare benign soft-tissue tumor that usually occurs in the trunk, head and neck, and lower extremity of middleaged adults. Herein, we describe an unusual case of SAM of the wrist, which was initially diagnosed as a ganglion cyst on imaging. Case Report: The patient was a 71-year-old man with no history of trauma who presented with a 2-year history of a palpable mass in the left wrist. Physical examination revealed a 2.5-cm, elastic hard, mobile, nontender mass. Magnetic resonance imaging revealed a well-defined mass with iso-signal intensity relative to skeletal muscle on T1-weighted sequences and very high signal intensity on T2-weighted fat-suppressed sequences. Subtle internal enhancement was seen following gadolinium administration. Complete excision was performed under general anesthesia with tourniquet control. Histologically, the lesion was composed of bland spindle to stellate-shaped cells in an abundant myxoid stroma. Immunohistochemically, the lesional cells were positive for CD34 but negative for S-100 protein, smooth-muscle actin, desmin, epithelial membrane antigen and pancytokeratin. These findings were consistent with a diagnosis of SAM. There was no clinical evidence of recurrence during a follow-up period of 3 months. Conclusion: Although extremely rare, SAM should be considered in the differential diagnosis of a cyst-like solid lesion near small joints.

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Section: Discussionmentioning

confidence: 72%

Superficial Angiomyxoma of the Wrist: Case Report and Literature Review

Chijiiwa

Nagano

Nishio

2023

In Vivo

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“…There are a few case reports demonstrating F-18-FDG uptake in IM showing low-grade F-18 FDG uptake with standard uptake value (SUV) values between 1.3 and 2.6 [15] . At present, the mechanism of uptake is uncertain but may reflect a varying proportion of metabolically active cells [16] . One case demonstrated the possible role of F-18 FDG PET-CT scan to detect postoperative residual IM [15] .…”

Section: Discussionmentioning

confidence: 99%

Imaging manifestations and pathological analysis of intramuscular myxoma: A case report and literature review

Zhang

Huang

Ding

2021

Radiology Case Reports

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Intramuscular Myxoma(IM) is a rare benign soft tissue tumor, and its etiology and histology source is still unclear. It is important to understand the pathological components of IM and its corresponding imaging features, as well as performing accurate and careful imaging assessments of IM before surgery. We present a case of a 43-year-old male who presented a lump in his left thigh and gradually enlarged during the past 8 years. The patient underwent CT, MRI, and CTA examined and was later pathologically confirmed as IM. This article will combine the literature，to explore the imaging manifestations and its pathological basis of intramuscular myxoma.

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“…On PET/CT myxoma could show 18-FDG avidity [9]. A specific variant of myxoma, resembling an IMM in almost every radiological and histological aspects, is the Juxta-articular myxoma (JAM): this tumor origin in the nearby and involves periarticular tendons, ligaments and joint capsules.…”

Section: Discussionmentioning

confidence: 99%

Spinal Myxoma of the Facet Joint: A Case Report

Ruinato¹,

Mandile²,

Colangeli³

et al. 2021

SCR

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Myxoma is a benign soft tissue tumor that can occur in a variety of locations. Intramuscular localization is common, myxomas of the paravertebral muscle are relatively rare and only few cases have been described in literature. Juxta-articular myxoma on facet joint is extraordinary. The current case described paraspinal muscles juxta-articular myxoma of the lumbar region in a 61-year-old man causing back pain and sciatica. Radiological findings showed a mass in the nearby of L5-S1 facet joints mimicking a big synovial cyst that deepened down into the psoas major muscle. A PET scan showed a higher metabolism involving the mass and no other localizations. Intraoperative histological analysis was consistent with Juxta-articular myxoma (JM). Treatment of choice was surgical excision, with complete relief of symptoms afterwards.

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

Cited by 19 publications

References 13 publications

Superficial Angiomyxoma of the Wrist: Case Report and Literature Review

Superficial Angiomyxoma of the Wrist: Case Report and Literature Review

Imaging manifestations and pathological analysis of intramuscular myxoma: A case report and literature review

Spinal Myxoma of the Facet Joint: A Case Report

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