The bone marrow is more frequently involved in Hodgkin's
granuloma than is suspected, as is shown by autopsy records.
Ziegler found the marrow involved in 40 per cent of the cases,
while Symmers noted medullary changes in 7 of 15 cases. These
authors observed a proliferation of endothelial cells, fibrosis
and, in some areas, an increase in normal cell elements of the
bone marrow. Other changes characteristic of Hodgkin's granuloma
were present. Actual destruction of the bone has been reported
from time to time with and without roentgenographic evidence.
Since the advent of the roentgen rays, groups of cases are
available in which the earlier symptoms referable to the bones
together with the roentgenograms can be studied, and the
progress of the disease followed to its termination. Of 396
cases registered as Hodgkin's granuloma in the Memorial
Hospital, the diagnosis was found to have been confirmed by
biopsy