Presence of a focal colonic FDG uptake incidental finding on a PET/CT scan justifies a colonoscopy to detect (pre-)malignant lesions. The fusion of PET and CT images allows an accurate localization of the lesions. PET/CT is a useful tool to differentiate pathologic from physiologic FDG uptake.

We reviewed the cranial MRI and radionuclide cisternograms of four adults with postural headache indicating spontaneous intracranial hypotension (SIH). All four underwent clinical and radiological follow-up. MRI showed diffuse, thin meningeal enhancement; bilateral subdural fluid collections; and morphological abnormalities secondary to "sagging" of the brain. Radionuclide cisternography revealed direct or indirect signs of leakage of cerebrospinal fluid (CSF) along the spinal axis, and the symptoms resolved after the leak treated by epidural injection of blood at a level indicated by the cisternogram. The diffuse meningeal enhancement decreased but persisted on follow-up MRI, although the patients were asymptomatic. All morphologic abnormalities resolved during 3-5 months follow-up.

Hybrid FDG-PET-CT is helpful for the detection of a potential head and neck primary tumour. Furthermore, hybrid FDG-PET-CT has the ability to diagnose occult or distant second tumour and metastatic disease and modify patient management.

We report a case of spontaneous intracranial hypotension (SIH) that was investigated using cranial MRI and radionuclide cisternography. Radionuclide imaging was remarkable, showing direct signs of diffuse asymmetric leakage and indirect signs of cerebrospinal fluid (CSF) hypotension consisting of slow CSF circulation to the convexity and rapid appearance of urinary bladder activity. The MRI appearance was also suggestive of SIH, with diffuse meningeal enhancement. Treatment with autologous blood injection at the level of the radionuclide spinal leakage was useful, resulting in disappearance of SIH symptoms.

Group 2 (weak to moderate staining) 15-5 (6 7) (n = 22) 16-1 (9 4) (n = 13)There were no significant differences between groups (Student's t test).gliomas, but failed to show a correlation with cell proliferation. Nor was the occa-