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Case Reports
. 2007;46(23):1931-4.
doi: 10.2169/internalmedicine.46.0444. Epub 2007 Dec 3.

Mechanism of formation of the orange-colored sputum in pneumonia caused by Legionella pneumophila

Jiro Fujita  1 , Masato Touyama, Kenji Chibana, Michio Koide, Shusaku Haranaga, Futoshi Higa, Masao Tateyama
Affiliations
Free article
Case Reports

Mechanism of formation of the orange-colored sputum in pneumonia caused by Legionella pneumophila

Jiro Fujita et al. Intern Med. 2007.
Free article

Abstract

It has been said that the color of sputum from patients with Legionella pneumophila pneumonia is orange. However, why the color is orange has not been clarified. First, orange-colored sputum obtained from a patient with L. pneumophila pneumonia is presented. Then, the formation of an orange-colored pigment in a culture medium (without charcoal) after the growth of L. pneumophila is demonstrated.

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