RESULTS: From the 119 patients with psoriasis (mean age 48.2 years, 72 men and 47 women), 67 were diagnosed with latent tuberculosis infection (56.3%). Average diameter of TST induration was 15 mm. Three cases developed active pulmonary TB: one miliary, one extensive cavitary TB, and one pseudotumoral TB form. Active TB occurred after a mean duration of biological treatment of 8 months. Two TB patients were on infliximab and one on adalimumab. All of them received standard regimen of anti-TB treatment based on Isoniazid, Rifampicin, Pyrazinamide, and Ethambutol for 6 months, with a good clinical outcome.