[Diagnostic challenges during cranial osteonecrosis elucidation].

This is a case report of an 81-year-old male with severe headaches caused by osteonecrotic lesions in the frontotemporal part of the skull. Initially, metastatic lesions were suspected but other causes had to be identified because of chronic inflammation evidence in all biopsies. In the diagnostic process a discussion of missed malignancy, morbus Paget and steroid induced avascular necrosis are presented.