We report our experience of peripheral blood and bone marrow changes in patients with HIV disease. Abnormalities were most commonly seen in patients with advanced disease. In AIDS group IV patients (CDC classification) anaemia (92%) neutropenia (85%) monocytopenia (75%) and thrombocytopenia (61%) have their highest incidence, the reason being a combination of factors such as infection, myelosuppressive drugs and HIV infection itself. Bone marrow examinations were performed most commonly for microbiological culture (25%) and the investigation of anaemia (16%). Morphological changes in the bone marrow were non‐specific and not pathognomic; however erythroid hypoplasia was found to be a distinctive feature associated with MAI infection. The procedure provided a high yield for microbiological culture, particularly in MAI infection.
In the 6-year period 1984-1989, 101 liver biopsies or 'needle necropsies' from human immunodeficiency virus positive patients were examined histologically. Of these, only nine showed no abnormality whatsoever. The commonest histological findings were either fatty change or changes related to co-existent chronic viral hepatitis. Granulomas were seen in 15 cases, four of which were positive for acid-fast bacilli. A range of organisms were recorded: cytomegalovirus (4); Histoplasma capsulatum (1); Pneumocystis carinii (2); Cryptococcus neoformans (1); and Leishmania donovani (1). There were two cases of non-Hodgkin's lymphoma, but no cases of Kaposi's sarcoma. Marked iron deposition, which correlated with multiple blood transfusions was seen in nine biopsies. We were unable to identify any histological feature in the liver as being specific for HIV infection. The high incidence of liver abnormalities reflects: (i) the coincident exposure to hepatotropic viruses; (ii) the presence of opportunistic infections and neoplasms, usually part of a disseminated multi-organ process arising in the setting of profound immune depression; (iii) iatrogenic causes, in particular iron overload related to multiple blood transfusions received for treatment of zidovudine-induced anaemia; and (iv) non-specific changes associated with chronic debilitating disease.
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