The hemoatoxylin and eosin staining of a lung section during autopsy of a patient suffering from AIDS shows desquamation of type 1 pneumocytes with prominent intracuclear basophilic inclusion bodies surrounded by a clear halo. The CD4 count was less than 100/mm3 before detnis- ' most likely diagnosis causing these featuresis:
Acute respiratory distress syndrome Pneumocystic jiroveci pneumoni CMV pneumonia Mycobacterium avium-intracellulare pneumonia