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Hiatal Hernia in Cats

A hernia occurs when one part of the body protrudes through a gap or opening into another part of the body. For example, a hiatal hernia takes place at the opening of the diaphragm where the food pipe joins the stomach. Part of the stomach pushes through the opening, and a hernia is formed. It is most likely to occur before a kitten has reached the first year, and is usually inherited (congenital). However, trauma may bring on an acquired hiatal hernia, and this can occur at any age.

Symptoms

• Anorexia
• Regurgitation
• Coughing
• Vomiting
• Weight loss
• Excessive salivation
• Shortness of breath

Causes

• Congenital
• Acquired - secondary to trauma or an increased effort to inhale
• Concurrent — the lower esophageal sphincter slides into the thoracic cavity and allows gastric reflux into the esophagus, causing inflammation of the esophagus

Diagnosis

X-rays may show soft-tissue density in the region of the esophageal opening (hiatus), but they may not reveal lesions. However, an enlarged esophagus can be detected by X-ray. Contrast exams can show the esophagus as it is joined to the stomach and may reveal any abnormalities that are causing the problems. An exam called the esophagoscopy will use a scope to detect inflammation and might possibly show the end (terminal) of the esophagus sliding into the thorax.

Diagnosis of hiatal hernia is based on examination and observation of one or more of the following manifestations of the condition:

• Foreign body in the esophagus
• Abnormal tissue growth in the esophagus
• Inflammation of the esophagus
• Enlargement of the lower esophagus
• The protrusion of the stomach into the esophagus
• A foreign body in the digestive tract
• Abnormal tissue growth in the stomach
• Inflammation of the stomach