“…1 Since its discovery, various diagnoses have been proposed with regards to a round polycyclic osteolytic lesion on the right frontal bone, measuring 37 mm x 27 mm (appendix): post-mortem alteration due to the soil, 2 rickets, 3 actinomycosis, 4 and Langerhans cell histiocytosis. 5 Recently, we did a medical CT scan, followed by a micro CT scan, on the lesion. The results showed the exact bone aspect of the pathological zone and peripheral limits (figure A): a limited resorption of the external cortical bone, of granular aspect, without peripheral sclerosis in the internal table, which excludes a malignant transformation.…”