Pitfalls of positron emission tomography for assessing relapse in Hodgkin's disease: a case report.

FDG-PET imaging is more frequently being used to stage malignant Lymphoma and monitor response to therapy. However, FDG-PET is not a tumor specific substance and increased accumulation may be seen in a variety of benign entities, our case exemplifies this problem and underline the importance of a biopsy.