Abstract: Objective To study the CT features of fungal rhino-sinusitis and to assess its diagnostic value. Methods CT features of 47 cases of fungal rhino-sinusitis proved by surgery and pathology from January 2007 to December 2013 were retrospectively analyzed. Results There are 43 cases of unilateral fungal infection and 4 cases of double sides. On CT scanning, soft tissues were presented in all the infected sinuses of all cases, heterogeneous density with spot,strip or lump calcification was presented in 37 cases(78.7%) and homogeneous density was presented in 10 cases(22.2%). There were bones thickening in 39 lesions(83.0%), dwindling of sinus in 20 patients(42.6%), and air bubble in 11 cases(23.4%).In 41 cases that lesions implicated in the maxilla, 33 cases(80.5%) showed obstruction and dilation of maxillary sinus ostium and 15 cases(36.6%)showed damage or resorption of medial wall. Conclusion Fungal rhino-sinusitis has characteristic findings on CT. The major CT findings are heterogeneous density of sinusal cavity with small calcification appeared as spots,floccose,sand-like or patchy shadows and local bone destruction. CT is a valuable method for diagnosis and treatment of fungal rhino-sinusitis.

Key words: Rhino-sinusitis, fungus, Tomography, X-ray computed