The frequency of unsuspected tuberculosis found post-mortem in a geriatric population.

Over a period of 14.5 years, 1911 complete autopsies were performed consecutively in two divisions of the same University Department of Geriatric Care, i.e., the Geriatric Hospital and the Center for Continuous Care. Sixty cases of active tuberculosis were observed, of which 37 cases (mean age of 84.51 years) had been clinically undiagnosed. Comparison with other published series indicate that the risk of unsuspected active (in fact, reactivated) tuberculosis mainly concerns "high age". The conditions which favor the disease are mainly in the context of immunodeficiency. Those which hinder the diagnosis are various, e.g., non-indicative tuberculin test, frequent impossibility to perform eye fundus examination or more aggressive investigations, frequency of cancer, and frequency of dementia in elderly people.