to develop criteria to distinguish among pyogenic infection , nonpyogenic infection , and neoplastic processes in the spine by means of computed tomography ( ct ) , the authors retrospectively analyzed 17 cases of pyogenic infection ( 20 sites ) , 40 cases of neoplastic disease ( 56 sites ) , and five cases of granulomatous infection ( eight sites ) .
C0027671
neoplastic processes
C0027651
neoplastic disease