| http://www.w3.org/ns/prov#value | - for primary staging.[216] In neurodegenerative LCH, F-18 FDGPET may be a useful tool for an early diagnosis before neuroradiologic abnormalities appear.[217] With pulmonary involvement, CT scanning is the best modality to reveal cysts and micronodular infiltrates.ReferencesOther TestsWhen pulmonary involvement occurs, pulmonary function may be abnormal.[120] {{Re121} Diffuse cystic changes, nodul
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