“…8.4), glioma, medulloblastoma [9], clival chordoma (Fig. 8.5) Extracranial: Warthin's tumour, nasopharyngeal carcinoma [19] Neck Thyroid tumours (papillary [20], Hurthle cell, follicular carcinoma, lymphoma [21]) Parathyroid adenoma Chest Mediastinum: Thymic carcinoma, oesophageal carcinoma [22] Lung carcinoma (squamous cell carcinoma) [11] Abdomen Adrenocortical carcinoma [23] GI malignancies (gastric, pancreatic and colon malignancy) Pelvis Bladder carcinoma [13] Testicular tumours (Leydig cell tumour) Skeletal Solitary: plasmacytoma [24], bone malignancy Multifocal: multiple myeloma [25,26], metastatic involvement due to synchronous malignancy General Lymphoma (DLBCL, Hodgkin's lymphoma) [27,28] Neurofibroma [29] Paraganglioma [30] Table 8. 4 Reported literature on various benign conditions with positive choline uptake that can lead to potential false positive interpretation Head and neck Tumefactive cerebral lesions (e.g.…”