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Persistent oropharyngeal membrane in a Hereford calf
1Department of Anatomy, Physiological Sciences, and Radiology, North Carolina State University, Raleigh 27606, USA.
Veterinary Pathology
|January 1, 1996
Summary
A persistent oropharyngeal membrane, a rare congenital defect, was identified in a Hereford calf, preventing nursing and defecation. This is the first reported case in domestic animals, highlighting a potential new area for veterinary research.
Area of Science:
- Veterinary Pathology
- Congenital Defects
- Comparative Medicine
Background:
- Congenital anomalies in livestock can significantly impact animal health and welfare.
- Oropharyngeal membranes are rare developmental defects, primarily documented in human medicine.
Observation:
- A 6-day-old Hereford calf presented with inability to nurse and failure to pass feces since birth.
- Physical examination revealed a tissue fold in the caudal oral cavity, confirmed by barium study to impede swallowing.
- Necropsy identified a complete soft-tissue partition between the oral cavity and oropharynx.
Findings:
- The calf had a persistent oropharyngeal membrane, a complete soft-tissue partition.
- Radiographic findings suggested epiglottic thickening, though not confirmed at necropsy.
- The defect prevented normal feeding and defecation, leading to the calf's critical condition.
Implications:
- This case represents the first documented instance of a persistent oropharyngeal membrane in a domestic animal.
- It suggests that this congenital defect may occur in animals, warranting further investigation.
- Comparison with persistent anal membrane in animals may offer insights into pathogenesis and potential management strategies.