We report the PET-CT appearance of actinomycosis in a 76-year-old man with a history of squamous cell carcinoma of the esophagus. The patient was initially treated with neoadjuvant chemoradiation therapy followed by esophagectomy and gastric pullup. Hybrid PET-CT was performed 20 months after completion of treatment using a Siemens Biograph scanner 45 minutes after intravenous administration of 15 mCi of F-18 FDG. PET-CT demonstrated intense hypermetabolism to the left of the anastomosis, corresponding to a soft tissue mass on CT. The patient underwent biopsy of the mass 10 days after PET-CT examination that confirmed actinomycosis with no evidence of recurrent disease.
We present 4 cases of cosmetic-related changes on 18F-FDG PET/CT. These cases represent post-treatment changes from facial juvederm injection, silicone injection in the chest wall and gluteal areas, paraffin injection in the gluteal region, and liposuction. Recognition of cosmetic-related changes and their appearance on PET and CT will help to avoid potential false-positive interpretations.
We report the F-18 fluorodeoxyglucose positron emission tomography/computed tomography appearance of a biopsy-proven primary epidural non-Hodgkin lymphoma involving the lower cervical and upper thoracic spine with a small hypermetabolic right middle lobe nodule in a 33-year-old man. The HIV-positive patient presented with mid- to low back pain for several days, which progressed to lower extremity weakness and urinary retention. Primary spinal epidural non-Hodgkin lymphoma is a rare form of malignancy, constituting approximately 0.1% to 3.3% of all lymphomas. In our case, the primary tumor appears as an intensely hypermetabolic soft-tissue mass involving the posterior epidural space from C6 through T9 levels.
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