ESOTRAC scientists have built a novel capsule optoacoustic endoscopy (COE) system which provides high‐quality 360‐degree images of the entire lumen, specifically designed for typical dimensions of human esophagus, highlighted on the recent cover of the Journal of Biophotonics. The probe resolved vascular structure and different layers of the esophageal wall down to a depth of 2 mm. These results have a great implication for the success of the ESOTRAC endoscope combining optoacoustics and OCT into a single device, which is currently tested in the laboratory at the Medical University of Vienna and approaching towards its final design.