Lung CT: Part 1, Mimickers of lung cancer--spectrum of CT findings with pathologic correlation.

Objective: The purpose of this article is to describe CT findings of miscellaneous pulmonary conditions that mimic lung cancers, especially primary cancers, to improve diagnosis of pulmonary lesions. Brief descriptions of patient clinical information and pathologic findings will be included and correlated with imaging findings in actual cases.

Conclusion: A wide variety of pulmonary conditions present imaging features that mimic those of primary lung cancers and are difficult to differentiate from cancer.

A huge fecalith associated with dialysis-related gastrointestinal amyloidosis.

A 60-year-old man who had been receiving dialysis for more than 30 years was admitted for treatment of cellulitis in his right thigh on November 7, 2003. He suffered from an ileus on December 14 and was found to have a huge, 7-cm-diameter, well-circumscribed fecalith, incarcerated at the splenic flexure of the colon. It was proving difficult to pass this naturally and surgical removal was thought to be too risky.