What is this incidental finding in the esophagus? Do you think this is iatrogenic or did the patient swallow a foreign body?
The finding is a wireless pH probe.
How is wireless pH monitoring performed?
The usual technique requires endoscopic visualization of the gastroesophageal junction with careful measurement of its distance from the incisors. The probe is then placed blindly 6 cm above the gastroesophageal junction using a transoral placement catheter. Deployment is achieved with suction that pulls esophageal mucosa into a small well on the side of the probe, after which the metallic retaining bar is triggered to pierce the suctioned tissue and the placement catheter is withdrawn. Most gastroenterologists reendoscope the patient to confirm an adequate attachment.
Radio-opaque foreign body overlying mid esophagus in the midline.