Mature teratoma of the middle ear

Mature Teratoma of Petrous Temporal Bone in an Infant: A Rare Clinical Entity

Laterally located intracranial mature teratomas are rare entities. We report an extremely rare case of an extra-axial mature teratoma of the left petrous temporal bone in an infant who was managed surgically. This is the second reported case of a mature teratoma of the petrous temporal bone in an infant.

Teratoma of the neonatal head and neck: A 41-year experience

OBJECTIVE

To review our institution's experience with the presentation, evaluation, and management of teratoma of the head and neck in the neonatal population.

DESIGN

Retrospective case series (November 1970 through September 2011).

SETTING

Tertiary care children's hospital.

PATIENTS

14 patients (12 boys and 2 girls).

INTERVENTION

Detailed review of presentation, diagnostic approaches, surgical management, and outcomes.

MAIN OUTCOME MEASURES

Anatomic sites, use of pre and post-natal imaging, use of EXIT (ex utero intrapartum treatment) procedure, presenting symptoms, surgical approaches, additional therapeutic modalities, and outcomes are reviewed.

RESULTS

Seven patients were diagnosed prenatally, while the remaining 7 patients were diagnosed at birth or shortly thereafter. The tumor emanated from the neck in 9 patients, the nasopharynx/oropharynx in 3 patients, the external nose in 1 patient and the face in 1 patient. Nine patients had associated upper airway obstruction. Four underwent an EXIT procedure, with 3 requiring intubation and 1 requiring tracheostomy. All patients underwent surgical resection. One patient demonstrated recurrence at follow-up.

CONCLUSIONS

Teratoma of the head and neck, though rare, is an important part of the differential diagnosis of neck masses in children, particularly in the perinatal period. The ability to make this diagnosis prenatally with high-resolution fetal ultrasound and MRI (magnetic resonance imaging) permits planning for airway and tumor management prior to delivery. An EXIT procedure should be considered when airway compromise by tumor compression is suspected. Early surgical excision is the treatment of choice and recurrence is rare when a complete resection is achieved.

Mature teratoma of the temporal bone in 3.5-month-old baby girl

Mature teratoma is a benign germ cell tumor rarely located in the temporal bone. We are reporting a case of a mature teratoma of the temporal bone in a healthy borne 3.5-month-old baby girl with a 2-day suggestive history of otitis media and polypoidal mass expulsing from the external auditory canal of the left ear. A definitive diagnosis is made after complete excision and histological examination of the tissue. Total surgical excision of the tumor is the treatment of choice.

Mature teratoma of the petrous bone with extension into the cerebellopontine angle: case report

Purpose Intracranial teratomas in children involving lateral structures such as the petrous portion of the temporal bone are very uncommon. The authors report a case of a petrous teratoma with significant extension into the cerebellopontine angle with brainstem compression.

Case Report An 11-year-old girl presented left-sided facial weakness. Computed tomography (CT) demonstrated a multiloculated lesion expanding the labyrinthine structures in the left petrous temporal bone including the vestibule, semicircular canals, and cochlea, with extension to the left cerebellopontine angle via the expanded left internal auditory canal. The tumor was resected via a transtemporal approach with no evidence of recurrence at nearly 2 years.

Conclusion Complete resection should be the primary treatment for these tumors to minimize the risk of recurrence. To the authors' knowledge, this is the first case report of a mature teratoma originating in the petrous bone with extension into the cerebellopontine angle.

Teratoma of the middle ear: a real entity or a non-entity?

Space-occupying lesions of the middle ear range from wholly benign developmental anomalies to highly virulent and aggressive malignancies. Amongst the benign entities classed with the family of developmental anomalies, the middle ear choristoma is well known. But what of the middle ear teratoma? Recent reports suggest that, while rare, teratomas of the middle ear do exist. Middle ear teratomas are defined as tumors consisting of benign tissues derived from all three embryologic layers: endoderm, mesoderm and ectoderm. They are lesions of the neonatal period and early infancy. While complete surgical excision will be curative, a thorough histologic examination of the specimen is recommended to exclude the possibility of immature and/or frankly malignant elements being admixed with the benign teratomatous elements.

Hamartoma of the middle ear: a case study

Hamartomas and teratomas are rare tumors in children. Its location in head and neck is quite exceptional. An unusual case of hamartoma in the middle ear is reported in a 5-month-old child. The tumor was isolated without associated malformation. Definitive diagnosis was made after surgery and based on histological results. At 2 years follow-up, no recurrence was observed. CT-scan is useful in order to reach a final diagnosis. Although rare, this type of tumor should be considered in the differential diagnosis of a middle ear mass during childhood.