Abstract
Several causes of noncaseating epithelioid granulomas of the skin must be considered before the diagnosis of sarcoidosis can be made. Cases (3) that were studied retrospectively with scanning electron microscopy in combination with backscattered electron imaging and X-ray energy spectrometry are reported. Inorganic particles were identified in the granulomas of 2 patients, illustrating that these techniques are valuable aids in establishing the cause of granulomas.