Detachable latex balloon occlusion of an internal carotid artery with an aberrant branch in a horse with guttural pouch (auditory tube diverticulum) mycosis.

The research article discusses a case of a horse with a fungal infection in its guttural pouch (an extension of the auditory tube), addressed through the closure of a malformed branch of its internal carotid artery using a detachable latex balloon. The study highlights the importance of recognizing and managing vascular anomalies in the internal carotid artery during surgical treatments to avoid lethal consequences.

Identifying an Aberrant Branch

• The researchers used angiography, an imaging technique that involves injecting a contrast medium into the vessels to visualize them under X-radiation.
• In the horse presented in the study, an aberrant or abnormal branch of the internal carotid artery was detected. This anomaly was discovered following the occlusion or closure of the distal portion of the artery with a detachable latex balloon.

Placing a Second Balloon

• Following the discovery of the aberrant branch, a second balloon was placed to prevent retrograde hemorrhage or bleeding backwards from the malformed branch, a common risk associated with such vascular anomalies.
• The successful placement of the second balloon allowed the horse to recover from its guttural pouch mycosis and return to its pre-disease level of activity.

Implications for Surgical Treatment of Guttural Pouch Mycosis

• Vascular anomalies of the internal carotid artery, such as the one found in this horse, might be more common than expected. Such anomalies can result in fatal complications during and after surgical treatment of diseases such as guttural pouch mycosis.
• The study underscores the importance of intraoperative identification of these vascular anomalies via techniques like angiography. Detecting and managing these irregularly structured vessels can potentially avert disastrous outcomes, thus improving patient prognosis.