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  • Title: [Burow's solution treatment for external auditory canal and mastoid cavity cholesteatoma].
    Author: Terayama Y, Sakata A, Murata Y, Harada K, Ohashi M.
    Journal: Nihon Jibiinkoka Gakkai Kaiho; 2010 Jun; 113(6):549-55. PubMed ID: 20653194.
    Abstract:
    Burow's solution, 13% aluminum acetate dissolved in water developed as ear drops by German Dr. Karl August Burow in the mid-1800s, was confirmed by Mahoney (1980) and Thorp et al. (2000) to act on chronic suppurative otitis media without ototoxicity. We have found it satisfactory in treating otitis media and other intractable inflammation and fungal infection of the external auditory canal. We report its potent effect in 2 cases of external auditory canal cholesteatoma (EACC) and 1 of mastoid cavity cholesteatoma (MCC)-the first such report insofar as we knew. Case 1 of EACC involved an 8-year-old boy with cholesteatoma debris in a bony groove evidencing defective skin just posteroinferior to the left tympanic membrane. EACC was cured after a single Burow's solution instillation. Case 2 of EACC was a 31-year-old woman whose left ear canal was filled by a keratin mass with pus positive for methicillin-resistant staphylococcus aureus (MRSA) and granulation and experiencing otalgia and dysgeusia. Computed tomography (CT) showed that the bony anterior and posterosuperior wall of the external auditory canal had been destroyed. The EACC was removed and Burow's solution instilled once a week, effecting a cure about one month later, leaving the bony groove of the anterior and inferior wall intact and recovering gustatory sensation. Case 3 of MCC was a 47-year-old man undergoing right canal wall down tympanoplasty three times. One year after the last surgery, the mastoid cavity and posterior external canal wall was covered by a cholesteatoma matrix with granulation and pus. Instilling Burow's solution for 5 months resulted in a completely dry cholesteatoma-free cavity. All three subjects had intact tympanic membranes. Burow's solution alone proving effective against EACC and MCC suggests its great usefulness as first-choice conservative therapy. Although this usually cannot completely cure middle-ear and attic cholesteatoma, its effectiveness in cases of EACC and MCC should be recognized in infection and inflammation with cholesteatoma.
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