[Pulmonary tuberculosis among hospitalized patients in Brazzaville: impact of late diagnosis of HIV infection on radiographic abnormalities].

The aim was to describing the different radiographic features of pulmonary tuberculosis according to the degree of immunosuppression in HIV patients. We report a retrospective study of 80 untreated HIV-positive patients with pulmonary tuberculosis hospitalized in the Pneumo-Phthisiology Department in Brazzaville from January 2013 to January 2014. Our sample consisted of 44 women (55%) and 36 men (45%), the sex ratio was 0.81. The average age was 37.5 ± 9.17 years, the average CD4 count was 153.13 ± 86,6 cell/mm3. Sputum smear microscopy to detect acid-fast bacilli was positive in 75% of patients with CD4 cell count >200 cell/mm(3). Mediastinal adenopathies, middle and lower lung field involvement and miliary were more frequent in patients with CD4 cell count < 200 cell/mm(3). Severe immunosuppression is significantly associated with atypical radiographic presentation of tuberculosis.