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Fluorodeoxyglucose with position emission tomography combined with CT or MRI (FDG-PET) has become an important diagnostic and staging method in head and neck squamous cell carcinoma. Some regard FDG-PET merely as a tool able of displaying cancer cells as bright spots on imaging. However, quantification of FDG uptake can be used as a surrogate marker for tumor aggressiveness and predict tumor response before (chemo)-radiation. The FDG uptake of the primary tumor can also predict surgical outcome measures such as depth of invasion, occult nodal metastasis, or bone invasion for oral cancer and/or organ preservation in hypopharyngeal cancer. [ABSTRACT FROM AUTHOR]

We report the case of a 84-year-old man who suffered a hematoma of the septum pellucidum due to a fall. The developm ent of the septum pellucidum and its im plications on pathomechanisms in head injury are discussed. In the setting of traum a, a reliable differentiation to other septal lesions can be impossible in computed tomography alone, unless earlier examinations are availabe for comparison. Additional magnetic resonance imaging may be warranted in case of vicinity of the lesion to the interventricular foramina. [ABSTRACT FROM AUTHOR]