Abstract
Myelolipomas are uncommon lesions of the adrenal gland. Four cases are presented which were found at post-mortem examination and in biopsies received during the last 12 years in the Pathology Departments of the Western General Hospital and of the University of Edinburgh. The pathogenesis of the lesion, which so far has remained an enigma, is discussed in the light of previous reports in the literature. Certain factors emerge which may now be seen to play an important pathogenetic role.