Lymph node biopsy
The pathological results of lymph node biopsy are the gold standard for
the diagnosis of PTLD. A true-positive (true-negative) result means that
the 18F-FDG PET/CT scan or judgment index is positive
(negative) for PTLD and the pathological diagnostic result is positive
(negative) for PTLD. A false-positive (false-negative) means that the18F-FDG PET/CT scan or judgment index is positive
(negative) for PTLD but the pathological diagnostic result is negative
(positive) for PTLD.