7/25/2019 Kerley B Lines DDx

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KERLEY B-LINESThickened, Edematous, Interlobular Septa (on !R"

Located alon# lun# peripher$, not alon# %ssure and in contact &ith pleura'suall$ lo&er one ) lun# base re#ion

*i+erential *ia#nosis atho#enesis

.Back of blood leading to pulmonary edema in theinterlobular septa

/t$pical neumoniaInterstitial pneumonitis leads to thick interlobularsepta with lymphocytes

Sarcoidosis Interstitial brosis leads to thickened septa

ancerInterstitial septa thickening via neoplastic cellsalong with edema

Interstitial ulmonar$.ibrosis

Interstitial brosis leads to thickened septa