Introduction : Apart from bacterial infections Procalcitonin (PCT) also increases in burns, trauma, and surgery

Methods : In a prospective study 45 cases (30 male and 15 female) of hepatobiliary and gastrointestinal cancer were taken, which were undergone surgery. It included the cases without (34) and with (11) prior radiotherapy. TPO and PCT were measured (ELISA) on day-1 preoperatively and day-3 (D3) & 5 (D5) postoperatively.

Results : At base level prior to surgery lower value of TPO was noted in the group not given RT (174.8 ?98.2pg/ml) than the group who were given (220.3 ?120.7pg/ml), although statistically insignificant (p-value 0.2). On D3, TPO value in the cases without RT was 287.2?77.3pg/ml and in the cases with RT, it was 472.6 ?265.2pg/ml, was statistically significant (p-value 0.01). On D5: TPO in patients without RT was 409.57 ?318.34pg/ml (further increased) & in cases with RT 585.00 ?469.61pg/ml (further increased), P value- 0.2, was statistically insignificant The corresponding PCT preoperatively was 171.6 ?563.7pg/ml & 100.0 ?42.08pg/ml in the cases without RT & with RT respectively (p-value 0.2, statistically insignificant). On D3, PCT value was 668.56 ?1114.09pg/ml and 400.63 ?660.64pg/ml in the cases without & with RT respectively; p-value 0.4, statistically insignificant. On D5, PCT was 265.54 ?513.77 & 648.27 ?1771.99pg/ml in cases without & with RT respectively; p-value 0.3, statistically insignificant

Conclusions : - Higher TPO level after surgery or radiotherapy is indicator of better response. - TPO level may be indicator therapeutic response after radiotherapy or cancer surgery.