A 50-year-old woman with long standing nonspecific disturbing headaches of the mid-face and rear of the head plus retro-orbital pain for about one year duration was proved to suffer from the fungus ball involvement of the left sphenoid sinus after operation. The diagnosis was established by histopathologic examination of the specimen removed at the time of operation.
 E. R. Thaler and D. W. Kennedy, “Rhinosinusitis—A Guide for Diagnosis and Management,” Springer, Berlin, 2008. http://dx.doi.org/10.1007/978-0-387-73062-2
 D. Lew, F. S. Southwick, W. W. Montgomery, A. L. Weber and A. S. Baker, “Sphenoid sinusitis. A Review of 30 Cases,” New England Journal of Medicine, Vol. 309, No. 19, 1983, pp. 1149-1154.
 J. Y. Li, T. Y. Yong, E. Khoo, G. R. Russ, D. I. Grove, P. T. Coates, et al., “Isolated Sphenoid Fungal Sinusitis in a renal Transplant Recipient Presenting with Bilateral Abducens Nerve Palsy,” Transplant International, Vol. 20, No. 7, 2007, pp. 640-642.
 D. S. Sethi, “Isolated Sphenoid Lesions: Diagnosis and Management,” Otolaryngology—Head and Neck Surgery, Vol. 120, No. 5, 1999, pp. 730-736.
 T. J. Martin, T. L. Smith, M. M. Smith and T. A. Loehrl, “Evaluation and Surgical Management of Isolated Sphenoid Sinus Disease,” Archives of Otolaryngology—Head and Neck Surgery, Vol. 128, No. 12, 2002, pp. 1413-1419. http://dx.doi.org/10.1001/archotol.128.12.1413
 A. Friedman, P. S. Batra, S. Fakhri, M. J. Citardi and D. C. Lanza, “Isolated Sphenoid Sinus Disease: Etiology and Management,” Otolaryngology—Head and Neck Surgery, Vol. 133, No. 4, 2005, pp. 544-550.
 Z. M. Wang, N. Kanoh, C. F. Dai, D. I. Kutler, R. Xu, F. L. Chi, et al., “Isolated Sphenoid Sinus Disease: An Analysis of 122 Cases,” The Annals of Otology, Rhinology, and Laryngology, Vol. 111, No. 4, 2002, pp. 323-327.
 S. W. Kim, D. W. Kim, I. G. Kong, D. Y. Kim, S. W. Park, C. S. Rhee, et al., “Isolated Sphenoid Sinus Diseases: Report of 76 Cases,” Acta Oto-Laryngologica, Vol. 128, No. 4, 2008, pp. 455-459.
 W. Lawson and A. Reino, “Isolated Sphenoid Sinus Disease: An Analysis of 132 Cases,” Laryngoscope, Vol. 107, No. 12, 1997, pp. 1590-1595.
 J. A. Socher, M. Cassano, C. A. Filheiro, P. Cassano and A. Felippu, “Diagnosis and Treatment of Isolated Sphenoid Sinus Disease: A Review of 109 Cases,” Acta OtoLaryngologica, Vol. 128, No. 9, 2008, pp. 1004-1010.
 Y. A. Nour, A. Al-Madani, A. El-Daly and A. Gaafar, “Isolated Sphenoid Sinus Pathology: Spectrum of Diagnostic and Treatment Modalities,” Auris Nasus Larynx, Vol. 35, No. 4, 2008, pp. 500-508.
 J. M. Klossek, E. Serrano, L. Péloquin, J. Percodani, J. P. Fontanel and J. J. Pessey, “Functional Endoscopic Sinus Surgery and 109 Mycetomas of Paranasal Sinuses,” Laryngoscope, Vol. 107, No. 1, 1997, pp. 112-117.