Tuberculoma of the lung.

The term tuberculoma of the lung is used here to describe a rounded, homogeneous radiographic opacity, with well-defined borders, one centimetre or more in diameter, of a tuberculous nature; no histological pattern is inferred. In the past such shadows have been called Assmann's foci, solitary or round foci, coin lesions, nodular tuberculosis, and localized caseous pneumonias, but none of these terms has come into general use. As a result of the wider application of chest radiography, this form of pulmonary tuberculosis is now being seen more frequently than in the past. Many problems are presented by these lesions, and in the available literature there is no uniformity of opinion concerning them. Only passing reference will be made in this paper to the problem of diagnosis ; their natural history and treatment will be discussed in greater detail.