A forty-one-year-old man presented with right-sided progressive facial nerve paralysis of one year duration. Computed tomography of the temporal bone showed a soft tissue mass in relation with the tympanic segment of the facial nerve with destructive changes in the facial recess region. Magnetic resonance images before and after gadolinium injection revealed a contrast-enhancing mass lesion in ...

BACKGROUND Chronic otitis media (COM) can be treated with tympanoplasty with or without mastoidectomy. In patients who have undergone middle ear surgery, three-dimensional spiral computed tomography (CT) scan plays an important role in optimizing surgical planning. OBJECTIVES This study was performed to compare the findings of three-dimensional reconstructed spiral and conventional CT scan of...

1. Abstract 2. Introduction 3. Morphology 3.1. Amphibian morphology 3.2. Reptile morphology 3.3. Avian morphology 3.4. Mammalian morphology 4. Neural crest origin of the skeletal elements 5. Signal mechanisms patterning neural crest contributions 6. Mesenchymal condensation 7. Chondrogenesis and osteogenesis 8. Skeletal elements: ossicles 8.1. Columella 8.2. Mouse ossicles – malleus 8.3. Incus ...

Schwannoma is one of the common benign middle ear space tumors. Middle ear space schwannomas may originate from the nerves of the tympanic cavity or by extensions from outside the middle ear space. In the English-language literature, the facial nerve and chorda tympani nerve, but not yet the tympanic branch of glossopharyngeal nerve (Jacobson's nerve), have been reported as the origins of intri...

We have investigated the dependence of several anatomical parameters of the guinea-pig middle ear on body weight, and thus on age. In particular, the volumes of the tympanic and epitympanic cavities are found to increase with age, with the tympanic cavity growing somewhat more slowly. The mass of the incus appears to be independent of body weight. These results are important for establishing th...

The chorda tympani is an important anatomical structure in the tympanic cavity. It may have some anatomic variations. Its anatomic variations are of interest in certain otologic surgical procedures. There are limited reports in the literature about the variations of the chorda tympani. A 49-year-old female patient was refered to our clinic because of conductive hearing loss and tympanic membran...