Congenital sinus cyst in a foal.

This research examines a case where a 17-day-old foal with facial swelling and difficulties in breathing, was diagnosed with a mass in the nasal passage and sinuses, which turned out be a fluid-filled structure. This cyst was surgically removed leading to eventual resolution of the foal’s health complications.

Case Presentation and Diagnosis

• The study involved a 17-day-old Standardbred foal with noticeable facial swelling on the right side and obvious signs of breathing difficulties (dyspnea) which had been present since birth.
• Using radiographic imaging and endoscopic examination, the veterinarians discovered a soft tissue mass in the foal’s right nasal passage. Further, this mass also extended to the maxillary and frontal sinuses on the right side.

Surgical Intervention and Aftercare

• In order to better access the mass for removal, a bone flap was created. This allowed the veterinarians to reveal the mass, which was discovered to be a fluid-filled structure, characteristic of a cyst.
• The cyst was surgically removed. After the surgery, it was recorded that the foal’s difficulty in breathing was significantly reduced.

Follow-Up and Final Outcomes

• Over time, the facial deformity also resolved. By the time the foal reached an age of 6 months, this facial swelling had completely disappeared.
• Furthermore, the obstruction in the upper airways, which was probably attributed to the presence of the cyst, was completely absent when the foal was clinically and endoscopically examined at 17 months old.

Therefore, this case study demonstrates the feasibility and effectiveness of surgical intervention in the treatment of sinus cysts in a foal, leading to significant improvements in breathing difficulties and facial deformities.