Fig. 2.

Example of Equivocal AXR with Corresponding AUS. a, b Example of equivocal AXR with corresponding AUS demonstrating pneumatosis. a Equivocal AXR where “bubbly lucencies” were noted in right lower quadrant and were read as “may represent pneumatosis”. b Corresponding AUS in the same patient. Images of the right abdomen depict bowel with “thickened wall” and “scattered increased areas of hyperechogenicity”, “findings consistent with pneumatosis”. c, d Example of equivocal AXR with corresponding AUS demonstrating absence of pneumatosis. c Equivocal AXR where “bubbly lucencies” were noted in the lower abdomen and could not be definitively differentiated from stool. d Corresponding AUS in the same patient. Images of the lower abdomen were read as “no pneumatosis”