1. Ruoppi P, Seppa J, Pukkila M, Nuutinen J (2000) Isolated sphenoid sinus diseases: case report. Arch Otolaryngol Head Neck Surg 126:777–781
2. Moody Marcus W, Chi David M et al (2007) Tornwaldt’s cyst: incidence and a case report. Ear Nose Throat J 28(3):400–404
3. Eloy P, Watelet JB, Hatert AS, Bertrand B (2006) Thornwaldt’s cyst and surgery with powered instrumentation. B-ENT 2(3):135
4. Stammberger H (1991) Functional endoscopic sinus surgery: the Messerklinger technique. Decker, Philadelphia, p 208
5. Goldfedder S, Westesson PL (2006) Neuroradiology case 110. University of Rochester Medical Center, Rochester