This sign is useful to identify diffuse ground glass opacity on HRCT in cases of Pneumocystis jirovecii pneumonia who may present with a normal or equivocal chest radiograph in the early course of disease 1.
- 1. Yadav P, Seith A, Sood R. The 'dark bronchus' sign: HRCT diagnosis of Pneumocystis carinii pneumonia. Ann Thorac Med. 2007;2 (1): 26-7. doi:10.4103/1817-1737.30359 - Free text at pubmed - Pubmed citation
- 2. Yudin A. Metaphorical Signs in Computed Tomography of Chest and Abdomen. Springer International Publishing. ISBN:B00IXF55WW. Read it at Google Books - Find it at Amazon
- 3. Prokop M, Galanski M. Spiral and Multislice Computed Tomography of the Body. TIS. ISBN:B005TGA7A8. Read it at Google Books - Find it at Amazon