Adrenal glands may be involved during both acute and chronic tuberculo
sis. They are enlarged in acute pulmonary tuberculosis. We aimed to in
vestigate the changes in adrenal size in acute pulmonary tuberculosis
before and after therapy in a prospective study. Eleven hospitalized p
atients with newly diagnosed sputum positive pulmonary tuberculosis we
re studied. Basal cortisol levels were measured in the patients before
and after the therapy. Cortisol levels were also measured 30 and 60 m
in after Synacthen (250 mu g i.v.) injection in the patients before th
e therapy. The size of the adrenal glands was measured by computerized
tomography. The maximum width perpendicular to the long axis of the b
ody of the gland, maximum width of the medial and lateral limbs and th
e length of the adrenals were measured. All measurements were done bef
ore and after the eight-month anti-tuberculosis therapy. All 11 patien
ts had an intact adrenal cortisol reserve. Both the width and length o
f the right and left adrenal glands were significantly greater before
the therapy than after the therapy. We conclude that adrenal enlargeme
nt demonstrated by computerized tomography in acute pulmonary tubercul
osis is reduced after appropriate therapy.