Abstract:
Objective This study aims to determine the clinical value of a multi-detector row computed tomography (MDCT) combined with multiplanar reconstruction (MPR) for the diagnosis of peritoneal carcinomatosis (PC), as well as to analyze the typical computed tomography (CT) features of PC.
Methods Fifty-four PC patients underwent MDCT and MPR before surgery. The results of the CT scan were analyzed by radiologists and oncologists by comparing the sensitivity and specificity with the intraoperative findings.
Results A total of 356 PC lesions were found in all 54 patients after enhanced CT scanning, ranging from 1 to 13 (average 6.5±3.4) for each patient. The most frequently observed PC sites were the greater omentum, left hemidiaphragm, splenic capsule, pelvis, right hemidiaphragm, and gastric ligaments. The PC lesions were mainly solid, with a diameter range of 0.5 cm to 13 cm. The overall sensitivity was 78.1% (356/456), and the overall specificity was 92.3% (277/300). The sensitivity was 90% (307/341) for the lesions ≥ 0.5 cm, was reduced to 42.6% (49/115) for the lesions < 0.5 cm. The degree of fitness between the CT-peritoneal carcinomatosis index (CT-PCI) and the intraoperative PCI was 0.384 to 0.640 (P < 0.05).
Conclusion MDCT and MPR can help determine a good degree of fitness of the CT-PCI value with the intraoperative findings and can significantly inform decision-making on treatment options for peritoneal carcinomatosis.