Características radiológicas da tuberculose pulmonar em doentes infectados pelo HIV: existe um indicador objetivo da co-infecção?

This study aimed to compare the radiographic characteristics of patients with pulmonary tuberculosis (TB) and human immunodeficiency virus (HIV) infection with those of HIV-negative patients. In all, 275 TB patients attending the outpatients clinics at the University Hospital/UFPE, were studied from January 1997 to March 1999. Thirty nine (14.2%) of them were HIV+, with a higher frequency of males in this group (p=0.044). Seventy-five percent of the HIV+ patients and 19% of the HIV- had a negative tuberculin test (PPD) (p < 0.001). The proportion of positive sputum smears in the two groups was similar. The radiological finding most strongly associated with co-infection was absence of cavitation (p < 0.001). It may therefore be concluded that the lack of cavitation in patients with pulmonary TB may be considered a useful indicator of the need to investigate HIV infection. This approach could contribute to increasing the effectiveness of local health services, by offering appropriate treatment to co-infected patients.Este trabalho objetivou comparar características radiológicas de doentes com tuberculose (TB) pulmonar, soropositivos para o vírus da imunodeficiência humana (HIV), com aquelas de doentes HIV-. Estudou-se, prospectivamente, 275 doentes com TB pulmonar, atendidos no Hospital das Clínicas da UFPE, entre janeiro de 1997 e março de 1999. Destes, 39 (14,2%) eram HIV+, com um predomínio maior de homens neste grupo (p=0,044). setenta e cinco por cento dos doentes HIV+ e 19% dos HIV- apresentavam reação negativa ao teste tuberculínico (PPD) (p<0,001). A proporção de baciloscopias positivas nos dois grupos foi semelhante. A característica radiológica mais fortemente associada à co-infecção tuberculose pulmonar/HIV+ foi a ausência de cavidades (p