quarter moon sign

A descriptive term for pooled barium which may be seen in an upper 'GI' series, a finding typical of benign gastric ulcers, which corresponds to an overhanging fold of mucosa surrounding the ulcer mouth

quarter moon sign

Radiology A descriptor for pooled barium seen in an upper 'GI' series, a finding typical of benign gastric ulcers, which corresponds to an overhanging fold of mucosa surrounding the ulcer mouth. See Meniscus sign of Carman.