The invention relates to a biopsy container (10) with an identification mark (13), which comprises one or more curves that surround the biopsy container. Identification information of the biopsy container may be encoded in a plurality of widths of the curves surrounding the biopsy container as well as in distances between these curves. Additionally, the biopsy container may comprise an alignment mark (11), which is configured to facilitate the registration of images of the biopsy container. The invention also relates to systems configured to determine identification information of a biopsy container and an image processing method.