In the setting of suspected complications of cancer therapy usually a synopsis of clinical information (signs and symptoms, body temperature), history (date and dose of radiation therapy, radiation portal, date and dose of systemic therapies, other relevant diseases such as DVT), laboratory findings (CRP, leucocytes, bronchoalveolar lavage (BAL) results: lymphocytic, neutrophil alveolitis, organisms, evidence of viral pneumonia) and imaging findings is made. This evidence concerns the gene CRP and viral pneumonia.