Lidocaine spray used to capture a live clinostomum parasite causing human laryngitis

Occurrence of Clinostomum complanatum in Aphanius dispar (Actinoptrygii: Cyprinodontidae) collected from Mehran River, Hormuzgan Province, South of Iran

“…There are also 15 cases reported from Japan and Korea that the parasites firmly attaches to the mucus memberane of the pharynx in humans [16,[29][30][31] . The primary therapy is removal of the parasitic worm, however, it is often difficult because of its rapid movement and firm adhesion to the submucosa [32] .…”

A Human Case of Clinostomum complanatum Infection in Korea

“…Some otolaryngologist tried local anesthetic spray on the parasite. They insisted that administration of 8% lidocaine solution was very effective not only to paralyze the worm movement but also to eliminate its suction to mucosa, allowing it to be easily removed [10]. In the present case, local anesthetic spray was not considered because the worm movement was not so fast.…”

“…The worm retrieved from a human was 4.5 mm long and 1.8 mm wide at day 2 after infection [10]. It grows to be 4.74 mm long and 1.05 mm wide at days 3-4 [5], and 5.17 mm long and 2.00 mm wide at day 7 [9].…”

A Case of Endoscopically Treated Laryngopharyngitis Resulting fromClinostomum complanatumInfection

“…In previously reported cases, C. complanatum was removed under general anesthesia using a laryngoscopic method. 6,10 In this case, we successfully removed the fluke using an endoscopy under sedation. We used an endoscopy to confirm that no flukes remained in the larynx, pharynx, esophagus, or stomach.…”

“…The removal process can be made easy by using lidocaine, which can reduce the movement of parasites and weakening their attachment to the mucosa. 10 New parasitic diseases have recently been reported, as freshwater fish, saltwater fish, and brackish-water fish are more commonly ingested raw due to the increasing popularity of certain types of diets. 9 Since the first report of C. complanatum infection in humans in 1995, only three cases have…”