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Ching L. Chiu, MD; William Sickels, MD

JAMA. 1975;234(11):1171-1174.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

FREQUENTLY encountered on chest roentgenograms are variations or shadows of normal structures projected in such a way that pathologic processes are simulated. Certain benign processes may also produce shadows that mimic those of malignant lesions. Keeping the possibility of such simulated disease in mind enables the viewer to recognize more easily the true nature of such images, with resultant facilitation of patient care. With this in mind, a few common examples are presented for illustration.

An ill-defined nodular density is seen through the shadow of the right side of the heart on frontal projection and overlies the spine on lateral view (Fig 1, left). An open arrow (Fig 1, center) indicates a second such density on the lateral view slightly above and anterior to the first. The possibility of pulmonary nodules was raised, and conventional tomography was performed for further evaluation of the lesions. This was not very helpful, showing . . . [Full Text PDF of this Article]

Author Affiliations
From the Department of Radiology, University of Iowa Hospitals and Clinics, Iowa City.

Footnotes
Reprint requests to Department of Radiology, University of Iowa Hospitals, Iowa City, IA 52242 (Dr Chiu).

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