Study of Role of Ultrasonography & Plain Radiography for The Diagnosis of Pneumoperitoneum

Objective: To study e 66 patients had hollow viscus perforations, (if we include four patientswho had perforated appendicitis) and two had acute cholecystitis. In the diagnosis of pneumoperitoneum, ultrasonographyhad improved sensitivity (90 versus 75 percent), negative predictive value (36 versus 18 percent), and accuracy (88versus 74 percent), and similar specificity (both 50 percent), and positive predictive value (95 versus 93 percent)compared with plain radiography. Conclusion: Ultrasonography is more sensitive than plain radiography in the diagnosis of pneumoperitoneum.