[Extrapulmonary intrathoracic pneumocystosis. Apropos of 4 cases in HIV positive patients].

The authors report 4 cases of intrathoracic extrapulmonary pneumocystosis; 3 of them involved the pleura and 1 the mediastinal lymph nodes. As in other rare but apparently increasingly frequent cases, everything seemed to incriminate the use of prophylactic Pentamidine aerosols, but only a prospective study of systemic versus aerosol prophylaxis can confirm this suspicion.