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  • Title: Late generalized tuberculosis: a clinical pathologic analysis and comparison of 100 cases in the preantibiotic and antibiotic eras.
    Author: Slavin RE, Walsh TJ, Pollack AD.
    Journal: Medicine (Baltimore); 1980 Sep; 59(5):352-66. PubMed ID: 7432152.
    Abstract:
    1. The clinical and pathologic findings in 100 patients with late generalized tuberculosis (LGT) are described and a comparison made between the findings occurring in the preantibiotic era with those in the early antibiotic period. The clinical presentation of LGT as seen in a general hospital has changed. Whereas, in the preantibiotic era, LGT was often the primary disease, occurring principally in young adults and frequently associated with pulmonary symptoms, in the antibiotic era, LGT commonly occurred together with and was frequently obscured by other diseases, often afflicted the elderly and was much less frequently accompanied by pulmonary symptoms. Symptoms related to extrapulmonary organ tuberculosis in this era were absent in 30% of patients. 2. Diagnostic difficulties in LGT arose because 20% of patients exhibited no constitutional symptoms prior to hospitalization, a history of tuberculosis often was lacking, fever curves and hematologic findings, with the exception of a left shift, commonly were non-specific, monocytosis frequently was absent, chest x-rays were non-diagnostic in about 50% of the cases, and anergy occured particularly in the elderly. 3. Caseous foci responsible for hematogenous spread generally derived from reactivated old caseous lesions located principally in the lungs, lymph nodes, bone, central nervous system, adrenals, and genito-urinary tract. Simultaneous reactivation of anatomically unrelated foci in multiple organs and lymph nodes occurred in 54% of cases. Although chronic pulmonary tuberculosis commonly was associated with LGT in the preantibiotic era, this association was uncommon in recent times. Chronic pulmonary tuberculosis served as the sole source for hematogenous dissemination infrequently and the pulmonary lesions responsible were acute. 5. Large caseous foci located in lymph nodes, bone, prostate gland, and central nervous system frequently occurred in the absence of clinical symptoms and therefore were undiagnosable. 6. The clinical course of LGT was often rapid, although histologic features indicated that the course in some patients was protracted or even episodic. 7. Miliary tubercles very frequently showed caseation and often they enlarged to cause progressive or complicated lesions. Chest x-rays and culture diagnoses were dependent on the formation of these complicated lesions. 8. Liver biopsy is recommended as a diagnostic procedure since 97% of patients exhibited granulomata in this organ. Of diagnostic importance is the fact that 90% of these granulomata exhibited caseous necrosis. Twenty-two percent of patients with liver granulomatas did not show tubercles in the bone marrow. 9. Multiple pathways rather than an exlcusive lymphangitic route were available for tubercle bacilli to gain access to the blood stream and cause hematogenous dissemination.
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