title: Mycobacterium genavense infection in AIDS: imaging findings in eight patients.
abstract: This retrospective study included eight HIV-positive patients with a M. genavense infection. Seven of these patients had a CT scan of the abdomen and a US examination, whereas one patient with pulmonary symptoms had conventional chest radiographs and thin-section CT scan of the thorax. Multiple large retroperitoneal and mesenteric lymph nodes were demonstrated in seven patients; low-attenuation centers within enlarged nodes were identified in two patients. On CT scans two cases showed circumferential wall thickening of the proximal small bowel with a deep ulceration in one of these patients. Additional findings included focal lesions in the liver (n = 1), spleen (n = 2), splenomegaly (n = 6), and hepatomegaly (n = 4). The CT scans from the thoracic examination demonstrated multiple diffuse nodular infiltrates in both lungs. M. genavense infection should be considered in the differential diagnosis of AIDS patients with CD4 counts below 100 cells/mm3 presenting with abdominal lymphadenopathy, multinodular or homogeneous hepatosplenic enlargement and circumferential thickening of the small bowel wall.
authors.affiliation: Department of Radiology, Hospital de Sant Pau, Universidad Autónoma de Barcelona, Spain.
authors.forename: J M
authors.initials: JM
authors.lastname: Monill
authors.forename: T
authors.initials: T
authors.lastname: Franquet
authors.forename: M A
authors.initials: MA
authors.lastname: Sambeat
authors.forename: A
authors.initials: A
authors.lastname: Martínez-Noguera
authors.forename: J
authors.initials: J
authors.lastname: Villalba
mesh_terms: D017088:AIDS-Related Opportunistic Infections / Q000000981:diagnostic imaging* / Q000382:microbiology; D000005:Abdomen / Q000000981:diagnostic imaging; D000328:Adult; D018791:CD4 Lymphocyte Count; D003937:Diagnosis, Differential; D006678:HIV / Q000276:immunology; D015483:HIV Antibodies / Q000032:analysis; D006801:Humans; D008297:Male; D008875:Middle Aged; D009165:Mycobacterium Infections, Nontuberculous / Q000000981:diagnostic imaging* / Q000382:microbiology; D009170:Nontuberculous Mycobacteria / Q000302:isolation & purification; D012189:Retrospective Studies; D013909:Thorax / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography
chemical_list: D015483:HIV Antibodies