Deceived but described. Legionellosis masquerading as rickettsia pneumonia.
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Biomedical subjects
Publications and source records attributed to F P Urso.
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A fatal case of Q fever pneumonia with demonstration of the organisms in the lungs is presented. The disease clinically simulates bacterial lobar pneumonia. Neutrophils were conspicuously absent in the inflammatory process. Histiocytes predominated in the alveolar septal spaces and produced both radiologically and pathologically an alevolar infiltrate. Histiocytic hyperplasia and focal necrosis were present. Histiocytes similar to those seen in the alveolar spaces of the lungs distorted the normal architecture of the lymph nodes. In scattered areas necrosis with histiocytes palisading in the periphery simulating the lesions of cat-scratch disease and tularemia were seen.
Cathartic colon has been described radiologically, but the pathological characteristics have not been reported. The authors describe a case in which radiological/pathological correlation was possible, with emphasis on the pathology of the colon. The disease simulates chronic ulcerative colitis radiologically and pathologically.
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