A case of lung myelolipomatosis in a patient with bronchial carcinoid

Myelolipomas are very rare benign tumours composed of an admixture of matur e adipose tissue and normal haematopoietic cells, Although they are most co mmonly found in the adrenal glands, extra-adrenal myelolipomas are document ed. We describe a case of myelolipoma arising in the lung in a 52-year-old man. The lesion was found incidentally in association with a carcinoid, To our knowledge, this is the second instance of this neoplasm presenting as a lung lesion, and the first case associated with bronchial carcinoid. Patho genesis and aetiology of myelolipomas are referred to in this paper with sp ecial regard to the clinical and pathological findings.