[Pulmonary bone-marrow embolism. Analysis of 53 cases].

The medical record and the lung sections were reviewed in 53 autoptic cases with pulmonary bone marrow embolism. In 31 cases the emboli could be ascribed to external cardiac massage, in one case to accident; in the other cases a definite aetiologic factor was lacking. The number of the emboli was largely variable from one section to another and sometimes very high (up to 16). The pulmonary bone marrow embolism has probably a clinical significance particularly when the underlying condition is severe.