“…Hodgkin's disease may be defined as a progressive malignant neoplasm of lymphoid tissue which appears to arise in a single focus and usually spreads along connecting lymphatic pathways, ultimately metastasizing to non-lymphoid organs (Trueblood et a]., 1972). Although the aetiology of the disease is unknown, its frequent association with fevers, granulomas and altered immunological responses, together with some evidence of an increased incidence within some communities, keeps alive the speculation not only over an underlying infective trigger mechanism but also an underlying immune system defect.…”