C. von Weller1 reports two cases of miliary tuberculosis of the placenta, with clinical latent tuberculosis of the mother. He calls attention to the fact that the reported cases of placental tuberculosis may be arranged in three groups.
Cases in which the mother was known to be tuberculous and in which, as a result of this knowledge, the placenta was given intensive study and found to exhibit the characteristic lesions of tuberculosis, either with or without a demonstration of the bacilli.
Cases in which the mother was known to be tuberculous, and in which the presence of tubercle bacilli in the placenta or fetal blood was demonstrated by staining methods or by animal inoculation without the recognition of tuberculosis of the placenta.
Cases in which the maternal tuberculosis was clinically unrecognizable and in which characteristic histopathologic lesions of tuberculosis were found in the routine examination of