Chondroma of the bony external auditory canal attached to the short process of the malleus

Gyo, Kiyofumi; Kawakita, Seiji; Kobayashi, Jyoji; Hakuba, Nobuhiro; Matsumoto, Suguru

doi:10.1016/j.ijporl.2004.04.034

Cited by 7 publications

(4 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the cases reported here, the masses did not appear to be in contact with the underlying periosteum, and there was no evidence of erosion in the periosteum of the bony EAC just beneath the masses, indicating that they did not originate from the periosteum. These findings led us to conclude that these masses were CC and not periosteal chondroma, a diagnosis which has been frequently reported in studies of cartilaginous masses of the bony EAC [1, 2, 4–7]. However, these reports also described that these masses were removed very easily with a pick, needle, or curette, just as in our cases, further suggesting that they may have been CCs rather than periosteum chondromas.…”

Section: Discussionsupporting

confidence: 82%

“…In consideration of this, observation is an appropriate strategy. Nonetheless, one study reported that a single CC enlarged in size and touched the tympanic membrane, resulting in conductive hearing loss [4]. Furthermore, it is very difficult to distinguish between CC and periosteal chondroma, preoperatively.…”

Section: Discussionmentioning

confidence: 99%

“…The presence of a cartilaginous mass on the bony external auditory canal (EAC) is an unusual finding, with as few as 53 cases reported in the literature [1–7]. Previously, authors referred to these masses as chondromas in their reports [1, 2, 4, 7]. However, in 2005, Lee proposed that these masses should be diagnosed as cartilaginous choristomas (CC) rather than chondromas [3].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Two Cases of Cartilaginous Choristoma—Not Chondroma of the Bony External Auditory Canal

Yamahara

Katsura

Egawa

et al. 2018

Case Reports in Otolaryngology

View full text Add to dashboard Cite

The presence of a cartilaginous mass on the bony external auditory canal is an unusual finding. Currently, two different diagnoses have been used to describe this type of mass: chondroma and cartilaginous choristoma. There is currently no consensus on which diagnosis is appropriate for this type of lesion. Choristoma is defined as a tumor-like growth of normal tissue occurring in an abnormal location. Histological examination alone cannot be used to distinguish between cartilaginous choristoma and chondroma, as both lesions comprise normal mature hyaline cartilage. To diagnose a mass as cartilaginous choristoma on the bony external auditory canal, it is necessary to confirm that it does not originate from the underlying periosteum. Here, we present the cases of two patients with typical cartilaginous masses on the bony external auditory canal, in which the surgical findings showed that the masses were not in contact with the underlying periosteum, indicating that cartilaginous choristoma—not chondroma—is an appropriate diagnosis for these mass lesions. The clinical findings (characteristic appearance and location) reported here may aid clinicians in the diagnostic and surgical management of these cartilaginous masses.

show abstract

Section: Discussionsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Two Cases of Cartilaginous Choristoma—Not Chondroma of the Bony External Auditory Canal

Yamahara

Katsura

Egawa

et al. 2018

Case Reports in Otolaryngology

View full text Add to dashboard Cite

show abstract

“…Nelms Jr. and Paparella [10] divided tumors found in the external auditory canal into three groups (epithelial anlage, interstitial anlage, and melanoma), and they classified chondroma as interstitial anlage. Recently, Yokogawa et al [17] reviewed 26 cases of chondroma, and Tanigawa et al [16] analyzed 48 previously reported cases [4,7,8,9,16] of this disease. According to their investigations, the patients' ages ranged from 2 to 70 years.…”

Section: Discussionmentioning

confidence: 99%

A Case of a Child with a Lipoma of the Middle Ear and a Concomitant Chondroma of the External Auditory Canal

Tachibana¹,

Nishizaki²,

Fujisawa³

et al. 2012

Journal of Case Reports in Medicine

View full text Add to dashboard Cite

The case of a 2-year-old boy with a right middle ear lipoma and a concomitant chondroma of the left external auditory canal is presented. The patient's preoperative diagnosis was cholesteatomas of the right middle ear and left external ear canal. A right-sided epitympanotomy was performed. A lump of fatty tissue in the right anterior middle ear cleft that obstructed the Eustachian tube orifice was found. The white mass in the left external auditory canal, which easily separated from the tympanosquamous fissure of the temporal bone, was excised with a Rosen needle. Histopathologic examination revealed a lipoma of the right middle ear and a chondroma of the external ear canal. No cases of concomitant lipoma and chondroma have been previously reported. In the present case, the middle ear lipoma could be classified as a congenital anomaly because of its association with a contralateral side chondroma, which would be a choristoma.

show abstract

Analysis of 95 cases of squamous cell carcinoma of the external and middle ear

et al. 2006

View full text Add to dashboard Cite

Chondroma of the bony external auditory canal attached to the short process of the malleus

Cited by 7 publications

References 9 publications

Two Cases of Cartilaginous Choristoma—Not Chondroma of the Bony External Auditory Canal

Two Cases of Cartilaginous Choristoma—Not Chondroma of the Bony External Auditory Canal

A Case of a Child with a Lipoma of the Middle Ear and a Concomitant Chondroma of the External Auditory Canal

Analysis of 95 cases of squamous cell carcinoma of the external and middle ear

Contact Info

Product

Resources

About