Clinical role of FDG PET/CT for methotrexate-related malignant lymphoma.

Methotrexate-related malignant lymphoma (MTX-RML) is a type of therapy-related lymphoma, and it often occurs in patients with rheumatoid arthritis. The most distinctive characteristic of MTX-RML is a quick response to withdrawal of MTX. However, because there is a risk of recurrence without a distinctive indicator of disease, close follow-up is needed.

F-18 FDG PET/CT imaging of bulky myxofibrosarcoma in chest wall.

Myxofibrosarcoma (MFS) has a spectrum of malignant fibroblastic lesions with variably myxoid stroma and pleomorphism. A 67-year-old man with a bulky mass on his chest wall was diagnosed with MFS. He underwent F-18 fluorodeoxyglucose (FDG) positron emission tomography/computed tomography for detection of metastasis.

Constrictive tuberculous pericarditis diagnosed using 18F-fluorodeoxyglucose positron emission tomography: a report of two cases.

We present two cases of tuberculous pericarditis that were diagnosed using 18F-fluorodeoxyglycose (18F-FDG) positron emission tomography (PET). Here, we highlight the value of 18F-FDG-PET for demonstrating tuberculous pericardial involvement as well as disease dissemination and activity. The patients received antitubercular treatment, and their symptoms and findings resolved accordingly.