Schematic anorectal clock - for reporting

Case contributed by Ian Bickle
Diagnosis not applicable
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Info

The anus (normal study) with annotations to indicate the clock-face for the purposes of reporting.

Case Discussion

The 'anal clock system' is used for the reporting of anorectal pathology, such as fistulae or tumors.

For example, ' Thickening of the left lower rectum. with extra-serosal extension between 3 and 6 o'clock'.

Image used for annotation from case http://radiopaedia.org/cases/normal-mri-pelvis-fistula-protocol.

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