Pulmonary coccidioidomycosis in a neonatal foal.

This research article presents a case study on a neonatal foal that had severe lung disease due to Coccidioides immitis infection and had to be put down as a result.

Clinical Presentation

• A 13-day-old foal was studied, which was found to be suffering from tachypnoea (rapid breathing) and severe respiratory distress.
• These symptoms indicated a potential problem related to the respiratory system, hence the veterinarians conducted a radiographic investigation of the foal’s thorax (the part of the body between the neck and the abdomen which contains the heart and the lungs).

Radiographic Findings and Outcome

• Following thorough examination, it was found that the radiographs of the foal’s thorax displayed a diffuse miliary pattern, indicative of some form of severe lung disease.
• The neonatal foal was also discovered to be hypoxaemic, meaning it had an abnormally low concentration of oxygen in its blood. This is a serious condition, as oxygen is required for all cellular processes in the body.
• Despite the empirical treatment provided to improve the foal’s condition, there was no noticeable improvement in its health. Considering its grievous suffering, the decision was made to euthanize the foal.

Postmortem Findings

• Postmortem examination of the foal revealed lesions associated with infection by the fungus Coccidioides immitis. This fungus typically causes a condition known as coccidioidomycosis or “Valley Fever,” which primarily affects the lungs.
• Interestingly, in this case, the infection was limited to the lower respiratory tract of the foal and did not spread to other parts of its body. This could possibly explain the distinct respiratory symptoms the foal exhibited.