Occult Primary

Occult Primary

NOTE: Occult Primary, this category applies to PROVEN malignancies without a confirmed primary site. This is NOT the routine to be followed in a search for an Occult Malignancy, i.e. in which a malignancy is highly suspected based on clinical findings, but has not been detected by testing or biopsy.

Axillary nodes

CT chest and abdomen

Cervical Nodes

Chest CT

Contrast CT or MRI of Skull base to thoracic inlet

PET

CT chest, abdomen and pelvis

CT abdomen and pelvis

Mediastinal, chest, pleural nodes, Liver lesions and retroperitoneal mass

CT chest, abdomen and pelvis

Supraclavicular nodes

CT neck, chest, abdomen and pelvis

Initial work up

PET

ACR Appropriateness Criteria http://www.acr.org/SecondaryMainMenuCategories/quality_safety/app_criteria/pdf/ExpertPanelonNeurologicImaging/EpilepsyDoc3.aspx accessed 11/16/10

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