So-called primitive neuroectodermal tumor in aborted previable fetuses.


We have described the gross anatomic and histopathologic characteristics of 36 tumorlike lesions found in previable fetuses. Although these lesions appear to be invasive, metastasizing, and likely contributing to the death of the fetus, they represent a frequent finding only among severely macerated retained fetuses of 9-16 developmental weeks and have… (More)