FDG uptake in lipomatous hypertrophy of the interatrial septum is not likely related to brown adipose tissue.

Lipomatous hypertrophy of the interatrial septum (LHIS) may be associated with arrhythmias or sudden death. Increased fluorine-18 fluorodeoxyglucose (FDG) uptake in LHIS is occasionally found on positron emission tomography, and has been attributed to metabolically active brown adipose tissue (BAT) contained within LHIS. We report a case of a patient suggesting that neither of the 2 currently known mechanisms of glucose uptake by BAT is responsible for FDG uptake in LHIS, unless a mechanism of BAT activation exists that has not been previously described.

Utilizing computed tomography as a road map for designing selective and superselective neck dissection after chemoradiotherapy.

Objective: To determine whether computed tomography can distinguish low risk neck levels that can be omitted when neck dissection is undertaken after chemoradiotherapy.

Study Design: Case series with chart review.

Setting: Tertiary care center.

Evaluation of low-density neutral oral contrast material in PET/CT for tumor imaging: results of a randomized clinical trial.

Objective: The objective of this study was to determine the impact on image quality and risks in terms of artifacts and side effects of a low-density barium-based suspension as oral contrast material for CT during PET/CT examinations of an oncologic patient population.

Subjects And Methods: Eighty-five patients (51 men and 34 women; mean age, 53 years; age range, 21-87 years) were prospectively randomized to receive either 0.1% barium sulfate oral suspension or no oral contrast material during PET/CT.

CT and PET: early prognostic indicators of response to imatinib mesylate in patients with gastrointestinal stromal tumor.

Objective: We report results from a pilot study aimed at optimizing the use of CT bidimensional measurements and 18F-FDG PET maximum standardized uptake values (SUVs-(max)) for determining response to prolonged imatinib mesylate treatment in patients with advanced gastrointestinal stromal tumors (GISTs).

Subjects And Methods: Sixty-three patients enrolled in a multicenter trial evaluating imatinib mesylate therapy for advanced GIST underwent FDG PET at baseline and 1 month after initiation of treatment. Of these 63 patients, 58 underwent concomitant CT.

Acute varicella infection mimics recurrent Hodgkin's disease on F-18 FDG PET/CT.

We report a case where acute varicella infection, chickenpox, mimics the findings of recurrent Hodgkin disease on F-18 FDG PET/CT. A 28-year-old man with a history of Hodgkin disease in remission had fatigue, pyrexia, and a raised ESR. His F-18 FDG PET/CT, performed to exclude lymphoma recurrence, demonstrated FDG-avid lymphadenopathy and increased FDG uptake in his spleen.