Physaloptera infection in 18 dogs with intermittent vomiting.

Physaloptera infections were diagnosed endoscopically in 18 dogs. Each case had vomiting as the primary clinical sign, and four cases had regurgitation as a concurrent sign. Fecal flotations, using magnesium sulfate solution, were performed in 12 of the 18 cases and were negative for Physaloptera eggs. In 12 of the 18 cases, only one worm was seen during endoscopic examination. Fifteen of 18 cases were treated with pyrantel pamoate, and 10 of 12 cases with follow-up had resolution of their vomiting.