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A case of osteoma with cholesteatoma in the external auditory
canal.Auris
Nasus Larynx. 2005 Sep;32(3):281-4.
Osteoma in the
external auditory canal (EAC) is an uncommon benign lesion, which
presents as a solitary, unilateral, and slow-growing pedunculated
mass in the outer half of the bony canal. It is usually
asymptomatic; but symptoms can arise if a canal obstruction occurs.
External canal cholesteatoma is also a rare lesion of the external
auditory canal. Cholesteatoma of the external auditory canal may
arise via several mechanisms. However, an occlusion or narrowing of
the external auditory canal is the basic pathogenesis. The
association of an osteoma with a cholesteatoma is extremely rare,
and there have been very few reports published. We encountered a
rare case of a 49-year-old man with an osteoid osteoma that was
complicated by a cholesteatoma in the external auditory canal. The
canal wall down mastoidectomy and tympanoplasty successfully removed
the osteoma and the cholesteatoma, and no recurrence or
complications had occurred in the first 6 months postoperatively.
Osteomas of
the middle ear.Med
Pregl. 2004 Mar-Apr;57(3-4):181-5.
INTRODUCTION: Osteomas of the middle ear are small, single, usually
unilateral, peduncular growths, off-white in colour, with smooth or
multilobular surface, asymptomatic or causing functional disorders
(progressive hearing loss, pathological appearance of the eardrum,
vertigo and otorrhea), of unclear or unknown etiology. Fleury
described three types of osteomas: massive, diffuse atticoantral and
localized type. The therapy is surgical. Small and asymptomatic ones
are followed-up. Cremers suggests surgical intervention in cases of
progressive growth and increased hearing loss. CASE DESCRIPTION:
Discharge and pain in the left ear started twelve years ago,
accompanied by impaired hearing and tinnitus. Four months ago the
symptoms aggravated and discharge and pain increased Otomicroscopic
findings revealed: perforation in the posterior attic and a
prominent polypous, clustered bright red formation. Schüller X-ray
showed total absence of pneumocyte cells, with distinct sclerotic
changes. Retroauricular access showed a biventricular bony formation
in the cavum and partly in the antrum. A cholesteatoma extended from
the cavum into the antrum, above the osteatoma. The bony formation
was separated transmeatally from the grip in the posterior attic
using a chisel, partially removing the bone wall of the exterior
aural tube, removing it completely through the mastoid antrum. The
removed bony mass, sized 5 x 8 x 8 mm, included also the incus.
DISCUSSION: Osteoma was discovered accidentally. Regarding clinical
features, it belonged to the second group, due to progressive
hearing loss, recurrent episodes of otorrhea, pain, biventricular
shape and association with cholesteatoma. It was removed using a
combined method. It was not possible to establish when the osteoma
exactly started generating. It is possible that the initial
complaints twelve years ago were the first signs of illness, and
chronic otitis may have occurred as a consequence of the tumor.
Osteoma of
the malleus.
Am J Otol. 1994 Nov;15(6):807-9.
Osteomas of
the temporal bone are benign neoplasms that may be encountered by
otolaryngologists. Clinically they should be distinguished from
exostoses, which involve the external auditory meatus and are a well
recognized entity. Osteomas involving the middle ear and ossicles
are extremely rare. There is only one case report in the literature
of an osteoma involving an ossicle and in that patient, who
presented with conductive loss, the incus was involved. The present
report presents a 48-year-old white male, who on routine examination
was found to have a mass in his left tympanic membrane. Under local
anesthesia the mass was totally excised, after it had been separated
from the umbo. Histopathologic sections of the mass revealed a
benign osteoma. A brief review of osteomas and exostoses of the
temporal bone is presented.
Osteoma of
the middle ear.An
Otorrinolaringol Ibero Am.
1994;21(4):403-8.
Osteomas of
the middle ear are extremely rare. Those of the mastoid process
being most frequent encountered als the tympanic sitting.
Extracanalicular osteomas of the temporal bone are scarce.
Bibliography about this particular subject account for 60
communications, only 9 with reference to the middle ear. The AA.
report the case of an osteoma of the left incus in an 17-years-old
boy, suffering a progressive deafness dating from 3 years term. The
otoscopy showed a reddish mass protruding in the tympanum. TC and
MNR provided evidence of a mass involving de auditory ossicula.
Through an exploratory tympanotomy could be removed the anomaly.
Histopathology make sure the diagnosis of osteoma. The AA. remark
some clinical and surgical features of the piece compared with the
other 10 cases reported in the literature reviewed.
Osteoma of
the external auditory meatus presenting as an aural polyp.J
Laryngol Otol. 1993 Oct;107(10):935-6.
Isolated
osteomata of the external auditory canal are benign and often
symptomless lesions, and are distinct from the much commoner
exostoses. A case is reported in which an osteoma presented as a
recurrent 'aural polyp' due to a fibroepithelial polypoid reaction
in the overlying skin. The polyp and the osteoma were excised
surgically. We believe this to be the first reported case to present
in this manner.
Osteoma of
the ear canal presenting with headache.J
Laryngol Otol. 1989 Jul;103(7):683-4.
Osteoma of
external auditory canal is a rare benign tumour. Usually it is found
incidentally and often symptomless. Here we have a case of osteoma
arising from the anterior wall of the bony external auditory canal,
causing ipsilateral temporal headache which was relieved by removal
of tumour.
Osteomas and
exostoses of the external auditory canal - medical and surgical
management.J
Otolaryngol. 1982 Apr;11(2):101-6.
Osteomas and
exostoses have distinct clinical and histopathologic features.
Osteomas are usually solitary, pedunculated, bony growths attached
to the tympanosquamous or tympanomastoid suture line, characterized
histologically by an internal structure of abundant discrete
fibrovascular channels surrounded by irregularly oriented lamellated
bone. Exostoses are usually multiple, bilaterally symmetrical, broad
based elevations of bone involving the tympanic bone. They are
histologically characterized by parallel, concentric layers of
subperiosteal bone. The infrequent symptoms resulting from these
lesions can usually be managed medically; however, on occasion
surgical removal is indicated. While surgical removal of the osteoma
is usually possible via the external auditory meatus, we recommend
that an exostosis be removed utilizing a postauricular approach.
Osteoma of
the middle ear. Report of a case.Arch
Otolaryngol Head Neck Surg. 1990
Oct;116(10):1214-6.
Osteomas of
the middle ear are rare. We report a case of a 7-year-old boy with
osteoma originating from the pyramidal eminence, combined with
congenital cholesteatoma. The osteoma and cholesteatoma were
successfully removed by tympanomastoidectomy. The long process of
the incus and the superstructure of the stapes disappeared. The body
of the incus was sculpted and used as a columella.
Histopathologically, the osteoma was much the same as an external
auditory canal osteoma. The possibility of a primary congenital
origin of this neoplasm is suggested.
Osteomas and
exostoses of the external auditory canal - medical and surgical
management.J
Otolaryngol. 1982 Apr;11(2):101-6.
Osteomas and
exostoses have distinct clinical and histopathologic features.
Osteomas are usually solitary, pedunculated, bony growths attached
to the tympanosquamous or tympanomastoid suture line, characterized
histologically by an internal structure of abundant discrete
fibrovascular channels surrounded by irregularly oriented lamellated
bone. Exostoses are usually multiple, bilaterally symmetrical, broad
based elevations of bone involving the tympanic bone. They are
histologically characterized by parallel, concentric layers of
subperiosteal bone. The infrequent symptoms resulting from these
lesions can usually be managed medically; however, on occasion
surgical removal is indicated. While surgical removal of the osteoma
is usually possible via the external auditory meatus, we recommend
that an exostosis be removed utilizing a postauricular approach.
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