1. Loretan S, Duvoisin B, Scolozzi P. Unusual fatal petrositis presenting as myofascial pain and dysfunction of the temporal muscle. Quintessence int. 2011; 42(5): 419–22.
2. Plodpai Y, Hirunpat S, Kiddee W. Gradenigo's syndrome secondary to chronic otitis media on a background of previous radical mastoidectomy: a case report. J Med Case Rep. 2014; 8:217.
3. Goldstein NA, Casselbrant ML, Bluestone CD, Kurs-Lasky M. Intratemporal complications of acute otitis media in infants and children. Otolaryngol Head Neck Surg. 1998;119(5):444–54.
4. Flint PW, Lund VJ, Niparko JK, Richardson MA, Robbins KT, Thomas JR. Cummings Otolaryngology – Head & Neck surgery. Fifth ed. Philadelphia: Mosby Elsevier 2015. p2963.
5. Lutter SA, Kerschner JE, Chusid MJ. Gradenigo syndrome: a rare but serious complication of otitis media. Pediatric Emergency Care. 2005; 21(6): 384–6.
6. Choi KY, Park SK. Petrositis with Bilateral Abducens Nerve Palsies complicated by Acute Otitis Media. Clin Exp Otorhinolaryngol. 2014; 7(1): 59–62.
7. Chen PY, Wu CC, Yang TL, Hsu CJ, Lin YT, Lin KN. Gradenigo syndrome caused by nontuberculous mycobacteria. Audiology Neurootology. 2014; 19(4): 275–82.
8. Bhatt YM, Pahade N, Nair B. Aspergillus petrous apicitis associated with cerebral and peritubular abscesses in an immunocompetent man. J Laryngol Otol. 2013;127(4):404–7.
9. Rossor TE, Anderson YC, Steventon NB, Voss LM. Conservative management of Gradenigo's syndrome in a child. BMJ Case Reports. 2011; 2011.
10. Valles JM, Fekete R. Gradenigo syndrome: unusual consequence of otitis media. Case Reports in Neurology. 2014;6(2):197–201.
11. Hananya S, Horowitz Y. Gradenigo syndrome and cavernous sinus thrombosis in fusobacterial acute otitis media. Harefuah. 1997;133(7-8): 284- 6, 335.
12. Kong SK, Lee IW, Goh EK, Park SE. Acute otitis media-induced petrous apicitis presenting as the Gradenigo syndrome: successfully treated by ventilation tube insertion. Am J Otolaryngol. 2011; 32(5): 445–7.
13. Scardapane A, Del Torto M, Nozzi M, Elio C, Breda L, Chiarelli F. Gradenigo's syndrome with lateral venous sinus thrombosis: successful conservative treatment. Eur J Pediatr. 2010; 169(4): 437–40.
14. Homer JJ, Johnson IJ, Jones NS. Middle ear infection and sixth nerve palsy. J Laryngol Otology. 1996; 110(9):872–4.
15. Chole RA, Donald PJ. Petrous apicitis. Clinical considerations. Annals Otology Rhinol Laryngol. 1983; 92(6 Pt 1):544–51.
16. Watkyn-Thomas FW. The Treatment of Petrositis: (Section of Otology). Proceedings of the Royal Society of Medicine. 1936; 29(3):267–74.
17. Hendershot EL, Wood JW, Bennhoff D. The middle cranial fossa approach to the petrous apex. Laryngoscope. 1976;86(5):658–63.