Tests for disease extension in LCH
MRT/CT (orbit)
Physical exam
X-ray skull (4 views)
Complete skeletal bone survey X-ray and bone scan or PET scan
Chest X-ray
Imaging of abdomen, pelvis
Bone marrow biopsy/aspiration
Blood count with differential erythrocyte sedimentation rate
Blood electrolytes and coagulation profile
Liver function test (including serum albumin, AST, ALT, bilirubin, AP)
Urine analysis and urine osmolarity
Water deprivation test
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