Mirror artefact as a diagnostic tool in identifying occult liver lesions on ultrasound

Mirror artefacts often can be seen in abdominal ultrasound. Their efficacy in detecting sonographically occult lesions has been overlooked.

We present two cases of abdominal ultrasound examination, where the mirror image artefact was utilised in the diagnosis of sonographically occult lesions in segment VII of the liver.

The physical principle behind the mirror image artefacts in these cases has been explored and explained. Suggestion on utilising this artefact is recommended.

These cases demonstrate the key role that mirror artefacts played in detecting occult liver lesions. Sonographers are advised to extend their survey of the right liver and pay close attention to displayed mirror images above the diaphragm especially from potential sonographically occult lesions in segment VII of the liver.