Study of respiratory symptoms among sputum positive

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TB. In 15 % of the cases, bilateral hilar adenopathy may be present and
could be confused with sarcoidosis. Usually, the adenopathy is unilateral.
Unilateral hilar adenopathy and unilateral hilar and paratracheal
adenopathy are equally common. Massive hilar adenopathy may herald a
complicated course. Atelectasis with an obstructive pneumonia may result
from bronchial compression by inflamed lymph nodes or from a caseous
lymph node that ruptures in to a bronchus (Rossman and Oner-Eyuboglu,
1998).
In the primary infection then is only sight predilection for the upper
lobes ; also, anterior as well as posterior segments can be involved. The air
space consolidation appears as a homogeneous density with ill-defined
borders, and cavitation IS rare except in malnourished or other
immunocompromised patients. Miliary involvement at the onset occurs in
less than 3% of cases, most commonly in children under 2-3 years ofage
(Rossman and Mayock, 1999).
Complication of primary pulmonary tuberculosis:
1) Progressive disease at the site ofthe lung lesion:
This is uncommon but if it does occur it tends to proceed to
cavitation and breakdown presenting as a typical tuberculous lesion but in
an unusual site (McNicol et al., 1995).
2) The formation oftubuerculoma :
Occasionally the granulomatous lesion progresses slowly resulting in
a circumscribed rounded lesion with surrounding fibrosis and often some
calcification which persists indefinitely. The finding of such a lesion in
later life may raise the suspicion of a carcinoma (McNicol et al., 1995).
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