Tag relative oligemia
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Westermark sign

Nils Johan Hugo Westermark (1892 - 1980) was a Swedish radiologist. Westermark sign (1938) of relative oligemia on CXR in pulmonary embolism
Nils Johan Hugo Westermark (1892 - 1980) 340

Nils Westermark

Nils Johan Hugo Westermark (1892 - 1980) was a Swedish radiologist. Westermark sign (1938) of relative oligemia on CXR in pulmonary embolism