[Subphrenic abscess in the context of low back pain and reading analytics in the primary care consultations].

The subphrenic space is defined as the area below the diaphragm and above the transverse colon. Most abscesses are due to direct subphrenic contamination associated with, surgery, local disease, or trauma, but the cause still remain undefined or unknown. It is a disease rarely diagnosed in primary care. About 55% of subphrenic abscesses are located on the right side, with 25% on the left, and 20% are multiple. These can be extended to the thoracic cavity, which sometimes produce empyema, lung abscess, or pneumonia. The mortality of subphrenic abscess is between 11%-31%, and may be due to uncontrolled infection, malnutrition, and complications of prolonged hospitalization, such as nosocomial infections. Ultrasound or computed tomography-guided percutaneous drainage is now the preferred treatment, combined with antibiotics.