Firstly we see that the abdominocentesis has substantially reduced the pneumoperitoneum. The position of the large organs has normalized, thus the most sinister complications such as large vessel compression could be avoided. Copious amount of free gas remains in unusual locations (such as the periportal spaces) too due to the formerly abnormal high intraabdominal pressure. The source of the free air, therefore, cannot be clearly established.
The left colon and sigmoid shows inflammatory wall thickening with mild stranding, thus making these hollow viscera the primary suspects.
Other findings: gallstones, kidney cysts, inguinal hernia on the left, umbilical hernia, prior known vertebral compressions and left radius fracture.