Considering the statement that the patient did not benefit from the operation, we predicted that the hearing loss at the time was not only due to effusion, meaning the existing pathology has been contributing to the hearing loss since then. Unfortunately, the patient did not provide any medical report or audiologic test result to suggest a clear picture of her auditory function before and after ventilation tube insertion. We learned that a ventilation tube was applied to her left ear 6 years ago with the diagnosis of unilateral otitis media with effusion, but her complaints did not regress after surgery. Her medical history revealed that her symptoms had been increasing for 7–8 years. Written informed consent was obtained from the patient for publication of this case report, and for any accompanying data.Ī 25-year-old female patient presented to our ENT clinic with complaints of increased hearing loss and fullness in her left ear. Here, we report a case of MEO that is causing unilateral middle ear effusion with Eustachian tube obliteration we also present a review of the relevant literature ( Table 1). The first description of MEO is attributed to Thomas in 1964 ( Thomas, 1964). Middle ear osteoma (MEO) is extremely rare ( Viswanatha, 2011 Silver et al., 1993). However, osteoma may also arise in the squamous part, internal auditory canal, glenoid fossa, Eustachian tube, petrous apex, or styloid process ( Milroy et al., 1989 Greinwald and Simko, 1998 Kim et al., 2006 Yoon et al., 2014). It is most commonly found in the external ear canal and mastoid ( Beale and Phelps, 1987 Shimizu et al., 2003). Osteoma of the temporal bone is usually a single, unilateral tumor. Osteomas occur more often in men, with male-to-female ratio ranging from 1.3:1.0 to 1.5:1.0 ( Georgalas et al., 2011). In otorhinolaryngologic practice, the most common region of origin for these tumors is the paranasal sinuses with a point prevalence of 3% ( Georgalas et al., 2011). Osteomas are slow growing, benign tumors that are made of mature bone.
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