Role of ascites adenosine deaminase in differentiating between tuberculous peritonitis and peritoneal carcinomatosis

Figure 1 Scatter plots shows the distributions of tumor markers and adenosine deaminase in serum and ascites between peritoneal carcinomatosis group and tuberculous peritonitis group. All tests were performed by Mann-Whitney U-test. PC: Peritoneal carcinomatosis; TBP: Tuberculous peritonitis; ADA: Adenosine deaminase; CEA: Carcinoembryonic antigen; CA 19-9: Carbohydrate antigen 19-9; CA 125: Carbohydrate antigen 125.

Figure 2 Peritoneoscopic pictures of tuberculous peritonitis and peritoneal carcinomatosis. A: Peritoneoscopic picture of tuberculous peritonitis of female patient. Multitudinous miliary nodules are seen on the parietal peritoneum. Biopsy revealed caseous granulomatous inflammation and the biopsy specimen stained positive for acid-fast bacilli; B: Colon cancer with peritoneal seeding. Multiple irregular whitish patch lesions were found on the parietal peritoneum. Poorly differentiated adenocarcinoma was documented on biopsy.

Figure 3 Receiver operating characteristic curve of ascites adenosine deaminase for differentiating between tuberculous peritonitis and peritoneal carcinomatosis. AUC of this receiver operating characteristic curve is 0.97 (95% CI: 0.92-1.00, P < 0.01). CI: Confidence interval; AUC: Area under the curve.