Abstract
Esophageal involvement in systemic amyloidosis is common. Manometric studies have been few in number and have revealed a variety of findings compatible with deposition of amyloid in myopathic as well as neuropathic patterns. This report describes a patient with primary amyloid whose esophageal dysfunction was limited to the lower esophageal sphincter, with both a hypertensive sphincter and impaired relaxation after swallows. Pharmacologic testing confirmed a mild abnormality of the inhibitory pathway to the LES with an intact excitatory pathway and sphincter muscle. This case suggests that amyloidosis, like idiopathic achalasia and carcinoma of the lower esophagus, can produce dysphagia by selective impairment of the inhibitory neural pathway to the lower esophageal sphincter.
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