Sarcoidosis presenting as a lobar or unilateral lung infiltrate

We present five cases of biopsy proven pulmonary sarcoidosis with initial radiographic localisation of disease to one lung. Four of the cases later demonstrated more typical diffuse bilateral pulmonary infiltrates. Clinical and pulmonary function data of these patients are presented. Although localised pulmonary involvement by Sarcoidosis may not be uncommon, we have found only limited discussion of this radiographic picture in the literature. Our cases and a review of the available literature are the subject of this paper.