1．頭部：ADEM，脳膿瘍，他

抄録

Acute disseminated encephalomyelitis (ADEM) and brain abscess, both with lesions in brain, sometimes show only subtle neurological symptoms resulting in delayed diagnosis. Fever of unknown origin with nonspecific neurological or psychiatric symptoms such as headache or irritability should prompt us to perform imaging study such as magnetic resonance imaging (MRI) or contrast enhanced computed tomography on suspicion of either of the above-mentioned diagnoses.

Scull base osteomyelitis is difficult to diagnose because of inconspicuous focal symptoms and imaging findings. To diagnose it correctly, imaging study should include nuclear medicine scan as needed in addition to MRI scan.

Sjögren’s syndrome in children often shows scant symptoms of dry eyes and dry mouth. Imaging studies such as sialography, MR sialography and salivary scintigraphy may reveal subclinical lesions in salivary glands and are important for making the diagnosis.