wall sign

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Related to halo sign: Reversed Halo Sign

wall sign

1. A sign mounted on, or fastened to, a wall.
2. In some codes in the US, a sign attached to the exterior wall of a building and projecting not more than 15 in. therefrom.
References in periodicals archive ?
In the present study MDCT findings in 37 HSCT patients with neutropenia and antibiotic-resistant FUO, and clinically suspected IPA were retrospectively evaluated via in order to detect the existence of focal pulmonary lesions, the halo sign, and vascular occlusion.
A pulmonary nodule with the halo sign observed with high-resolution CT is an important and early sign of IPA; however, the halo sign is a non-specific imaging finding that may be observed in other diseases (7), (8).
Bowel wall fat halo sign in patients without intestinal disease.
The density of the intramural stratum of the halo sign varied from -75 to +33 Hounsfield units," Dr.