Deposition of cigar smoke particles in the lung: evaluation with ventilation scan using (99m)Tc-labeled sulfur colloid particles.

Unlabelled: This study examined the degree to which cigar smokers inhale when they smoke cigars. A second objective was to assess the level of association between self-reported inhalation and observable cigar particle deposition in the lung. We hypothesized that cigar smokers with a history of cigarette smoking would show a greater amount of smoke deposition than would cigar smokers with no history of cigarette smoking.