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

World Journal of Surgical Oncology

Case Report

Masatoshi Naito¹  Jun Nishio¹ 

[1] Department of Orthopaedic Surgery, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, 814-0180, Jonan-ku, Fukuoka, Japan;

关键词: FDG;    Intramuscular myxoma;    MRI;    PET/CT;   

DOI  :  10.1186/1477-7819-10-132

 received in 2012-03-11, accepted in 2012-03-11,  发布年份 2012

来源: Springer

【 摘 要 】

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.

【 授权许可】

CC BY   
© Nishio and Naito; licensee BioMed Central Ltd. 2012