Direct comparison of choline PET/CT and MRI in the diagnosis of lymph node metastases in patients with prostate cancer.

Background: Lymph node detection in prostate cancer is challenging and critical to determine treatment policy. Choline PET/CT (positron emission tomography/computed tomography) and magnetic resonance imaging (MRI) have been used for the evaluation of lymph node metastasis in patients with prostate cancer for the past decade. However, only limited patients underwent direct comparison studies.

[Manifestations of PET/CT Imaging in Primary Central Nervous System Lymphoma].

Objective: To investigate the PET/CT features of primary central nervous system lymphoma(PCNSL).

Methods: A retrospective analysis of PET/CT imaging manifestations and clinical data was performed in 4 PCNSL cases which were confirmed by surgery or stereotactic pathologic biopsy.

Results: The pathologic biopsy in 4 patients all showed diffuse large B cell lymphoma with a total of 8 lesions.