[Anti-PD1 immunotherapy followed by tuberculosis infection or reactivation].

Introduction: Immunotherapy is now a standard of care in oncology. There is a need to improve our knowledge about immune-related adverse events, especially infectious diseases.

Case Report: We describe the case of a 49-year old male who received anti-PD1 therapy, to treat metastatic melanoma with pulmonary metastasis.

[Coccidioidomycosis presenting as a pulmonary nodule after pneumonia].

Coccidioidomycosis is a fungal infection endemic in the south west of the United States. Sixty percent of infected individuals remain asymptomatic. Symptomatic disease manifests itself with variable signs such as pneumonia, pleural effusion, empyema or acute respiratory distress syndrome.

[Actinomycosis presenting as a chronic excavated pneumonia in a young woman].

Introduction: Pulmonary actinomycosis is an anaerobic bacterial infection occurring primarily in debilated patients with poor oral hygiene. Before the penicillin era, thoracic actinomycosis looked like tuberculosis or neoplasia with chest wall invasion and fistula formation.

Observation: We report the case of a 39 years old woman presenting with a chronic lung abscess of the left upper lobe hospitalised after several unsuccessful courses of antibiotics.