CALCA and laryngotracheoesophageal cleft: Cancer patients who have an accelerated developmental stage have a higher mean of PCT than those in the low stages (0.190 ng/mL vs 0.127 ng/mL, p=0.004 [14]. Also, our observations are similar to those of Avrillon and her colleagues [12] who evaluated the serum PCT levels in 89 newly diagnosed LC patients.