Biomaterial Database

Pathology of Mycobacterium avium-intracellulare infection in acquired immunodeficiency syndrome. 1987

E C Klatt, and D F Jensen, and P R Meyer

The clinical setting, gross organ distribution, and microscopic pathologic findings of disseminated Mycobacterium avium-intracellulare (MAI) infection are described at autopsy in 12 patients with acquired immunodeficiency syndrome (AIDS). All patients were diagnosed by premortem mycobacterial cultures. The clinical course of MAI infection was often prolonged, and death was usually due to an additional infection. In every patient, the distinctive microscopic feature on hematoxylin--eosin staining was a poorly defined granuloma consisting of pale blue, striated histiocytes filled with mycobacteria. Well-formed granulomas with fibrosis, necrosis, and epithelioid histiocytes were present in less than one third of cases. MAI is an opportunistic pathogen that may complicate the course of AIDS but only rarely leads to death. The characteristic appearance of striated histiocytes may aid in the recognition of this infection.

UI	MeSH Term	Description	Entries
D007421	Intestine, Small	The portion of the GASTROINTESTINAL TRACT between the PYLORUS of the STOMACH and the ILEOCECAL VALVE of the LARGE INTESTINE. It is divisible into three portions: the DUODENUM, the JEJUNUM, and the ILEUM.	Small Intestine,Intestines, Small,Small Intestines
D008198	Lymph Nodes	They are oval or bean shaped bodies (1 - 30 mm in diameter) located along the lymphatic system.	Lymph Node,Node, Lymph,Nodes, Lymph
D008297	Male		Males
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D009162	Mycobacterium avium	A bacterium causing tuberculosis in domestic fowl and other birds. In pigs, it may cause localized and sometimes disseminated disease. The organism occurs occasionally in sheep and cattle. It should be distinguished from the M. avium complex, which infects primarily humans.
D009894	Opportunistic Infections	An infection caused by an organism which becomes pathogenic under certain conditions, e.g., during immunosuppression.	Infection, Opportunistic,Infections, Opportunistic,Opportunistic Infection
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000163	Acquired Immunodeficiency Syndrome	An acquired defect of cellular immunity associated with infection by the human immunodeficiency virus (HIV), a CD4-positive T-lymphocyte count under 200 cells/microliter or less than 14% of total lymphocytes, and increased susceptibility to opportunistic infections and malignant neoplasms. Clinical manifestations also include emaciation (wasting) and dementia. These elements reflect criteria for AIDS as defined by the CDC in 1993.	AIDS,Immunodeficiency Syndrome, Acquired,Immunologic Deficiency Syndrome, Acquired,Acquired Immune Deficiency Syndrome,Acquired Immuno-Deficiency Syndrome,Acquired Immuno Deficiency Syndrome,Acquired Immuno-Deficiency Syndromes,Acquired Immunodeficiency Syndromes,Immuno-Deficiency Syndrome, Acquired,Immuno-Deficiency Syndromes, Acquired,Immunodeficiency Syndromes, Acquired,Syndrome, Acquired Immuno-Deficiency,Syndrome, Acquired Immunodeficiency,Syndromes, Acquired Immuno-Deficiency,Syndromes, Acquired Immunodeficiency
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D013154	Spleen	An encapsulated lymphatic organ through which venous blood filters.