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39
Lobar Consolidation has also been frequently encountered at
the Chest Clinic; apart from tuberculosis, pneumonia, cancer and
abscess formation have been among the conditions encountered.
Excavation of the Lung, apart from tuberculosis has been
found to be due to abscess, gangrene, cancer or bronchiectasis.
Miliary Deposits in the lung have on investigation proved,
apart from tuberculosis, to be due to carcinoma, silicosis, vascular
engorgement with heart disease (Mitral Stenosis), bronchiolitis,
and in two of our cases Boeck's Sarcoidosis, so that it can be readily
seen that there is hardly any X-ray picture which can be produced
by pulmonary tuberculosis which cannot be simulated by nontuberculous
disease. It follows that no Physician dealing with
Chest Disease, can afford to confine his attention purely to the
narrower sphere of tuberculosis only, if accurate diagnosis and
accurate statistics of the incidence of pulmonary tuberculosis is to
be achieved.

making an average for the war years of 7.97 per cent., of which
3.41 per cent. were active cases and 4.56 per cent. inactive cases.
This group of the population continues to form an extremely
important source for detecting the disease in its comparatively
early stages. We have been particularly struck during the year
with the comparatively large number of contact examinations
entirely free from symptoms, who are discovered to have early
pulmonary tuberculosis.
Collapse Therapy and Thoracic Surgery.
Artificial pneumothorax refills continue to be done at the Clinic
in ever-increasing numbers. These cases are all carefully controlled
with X-ray examinations.