Equine veterinary journal · 2004
Idiopathic muscular hypertrophy of the oesophagus in the horse: a retrospective study of 31 cases.
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Benders N A, Veldhuis Kroeze E J B, van der Kolk J H
Аннотация
REASONS FOR PERFORMING STUDY: To present the first report of a case series concerning equine idiopathic muscular hypertrophy of the oesophagus (IMHO).
OBJECTIVES: To investigate the clinical and pathological features of the disorder.
METHODS: The medical records of 31 horses suffering from the disorder were reviewed retrospectively. In all these animals the diagnosis was confirmed at post mortem examination.
RESULTS: The median age of the affected horses was 12.5 +/- 5.6 years (range 1-26) without sex or breed predilection. Only 2 out of 31 horses showed clinical signs associated with oesophageal dysfunction, indicating that the muscular hypertrophy was rather a coincidental post mortem finding. Histology revealed thickening of the distal portion of the oesophagus mainly involving the circular layer of the tunica muscularis without fibrosis or inflammation. In 8 cases, the disorder was seen in concurrence with idiopathic hypertrophy of the tunica muscularis of various other parts of the gastrointestinal tract.
CONCLUSIONS: In the majority of patients, IMHO was a coincidental finding at post mortem examination usually confined to the smooth, circular muscle layer of the tunica muscularis externa.
POTENTIAL RELEVANCE: Further research is necessary to study the precise effect of IMHO on oesophageal function.
OBJECTIVES: To investigate the clinical and pathological features of the disorder.
METHODS: The medical records of 31 horses suffering from the disorder were reviewed retrospectively. In all these animals the diagnosis was confirmed at post mortem examination.
RESULTS: The median age of the affected horses was 12.5 +/- 5.6 years (range 1-26) without sex or breed predilection. Only 2 out of 31 horses showed clinical signs associated with oesophageal dysfunction, indicating that the muscular hypertrophy was rather a coincidental post mortem finding. Histology revealed thickening of the distal portion of the oesophagus mainly involving the circular layer of the tunica muscularis without fibrosis or inflammation. In 8 cases, the disorder was seen in concurrence with idiopathic hypertrophy of the tunica muscularis of various other parts of the gastrointestinal tract.
CONCLUSIONS: In the majority of patients, IMHO was a coincidental finding at post mortem examination usually confined to the smooth, circular muscle layer of the tunica muscularis externa.
POTENTIAL RELEVANCE: Further research is necessary to study the precise effect of IMHO on oesophageal function.