Preferred Label : rat tail narrowing sign;
Definition : Bronchial narrowing with lack of normal branching distally resembles a rat tail on
a bronchogram. If narrowing is asymmetric, suggests carcinoma; if symmetric, suggests
inflammatory process.;
Source : Eisenberg, Ronald L. Atlas of Signs in Radiology.;
Origin ID : RID35474;
Associated condition(s)
Bronchial narrowing with lack of normal branching distally resembles a rat tail on
a bronchogram. If narrowing is asymmetric, suggests carcinoma; if symmetric, suggests
inflammatory process.
