“…[23] The sensitivity, selectivity, PPV and NPV of chest US and chest radiography in PNX diagnosis were also evaluated in some studies in the literature. [17,18,24,25] In our study group, for the detection of PNX, the sensitivity of chest US is 88%, specificity 99.5%, positive predictive value 95.7% and negative predictive value 98.4%. For the detection of PNX, the sensitivity of APCR was 34.8%, selectivity 100%, positive predictive value 100%, and negative predictive value 92.6%.…”