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Table 3: Clinical Condition—Sacral Plexopathy
MRI, abdomen and/or pelvis CT, abdomen and/or pelvis X-ray, lumbosacral spine X-ray, pelvis FDG-PET, whole body
Without and with contrast Without contrast Without and with contrast Without contrast
Sudden onset 8^a 7^a 5^a 4^a 3 3 1
Chronic 8^a 7^a 5^a 4^a 4 3 2^b
Post-traumatic, nonacute 8^a 7^a 4^a 5^a 3 3 1
Cancer patient; no history of local radiation therapy 8^a 7^a 5^a 4^a 3 3 7^c
Cancer patient; post-radiation therapy 8^a 7^a 5^a 4^a 3 3 7^d
Note:—Appropriateness criteria scale from 1 to 9; 1, least appropriate; 9, most appropriate.
^a One or more anatomically contiguous studies may be appropriate depending on clinical circumstances.
^b May be appropriate if malignancy suspected.
^c May be useful for staging and characterizing local lesion.
^d Best imaging tool to distinguish between tumor recurrence and radiation plexopathy.