Mastoid osteoma

Osteomas are osteoblastic neoplasms affecting the parietal and frontal bone. Mastoid osteomas of temporal bone are rare benign tumors with incidence of 0.1%-1% of all benign tumors of the skull.We present a case of a young 19-year-old female who complained of right posterior auricular hard swelling which had gradually increased in size over the past 2 years and felt pain for less than a year.There was no history of trauma, symptoms of inflammation or occlusion of the ear canal. She felt a pain during the eruption of her second molar teeth. Non-contrast CT was done and it showed a well-defined densely calcified lesion of bone attenuation in the right mastoid posteriorly measuring 1.7 × 1 × 2.3 cm. The middle ear cavity, ossicular chain, inner table of skull and diploe were normal with no extension intracranially and no bony destruction.These findings spoke in favor of a mastoid osteoma.

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“…Osteomas are benign osteoblastic tumors of mesenchymal origin [1,5] which affect the head and neck, and most often the parietal and frontal bone.…”

Section: Discussionmentioning

confidence: 99%

“…Osteomas are osteoblastic neoplasms affecting the parietal and frontal bone [1][2][3]. Mastoid osteomas of temporal bone are rare benign tumors with incidence of 0.1%-1% of all benign tumors of the skull.…”

Section: Introductionmentioning

confidence: 99%

Mastoid Osteoma of the Temporal Bone

Kocev

Belcevska

G³

2021

JMS

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“…Investigation of choice is non contrast computerised tomography in which osteoma appears as well demarcated, high opacity and dense growth of sclerotic lesion from mastoid bone. 12 The radiologic borders of other lesions are less clear than those of osteoma, which forms the most important diagnostic criteria radiologically. 13 Computerised tomography helps in anatomical reconstruction and to know the proximity to the surrounding important structures like facial nerve, sigmoid sinus and labyrinth.…”

Section: Discussionmentioning

confidence: 99%

“…Common indications being cosmetic deformity followed by associated symptoms due to pressure over neighbouring structures. 12 Complication of osteomas include pressure over facial nerve and bony labyrinth. Complete excision is not indicated in such situations and leads to partial removal to avoid damage to these structures.…”

Section: Discussionmentioning

confidence: 99%

A rare presentation of left postaural mastoid osteoma

Sivakumar

Swapna

Karanam

2020

Int J Otorhinolaryngol Head Neck Surg

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Osteomas are benign slow growing tumors of mesenchymal origin. Most commonly found along the long bones like proximal shaft of femur around 19% followed by tibia around 10% and head and neck osteomas around 0.1 to 1%. We report a rare case of postaural osteoma in a 44 year old female with cosmetic deformity and discuss its differential diagnoses and treatment protocol. A 44-year-old female presented to ear, nose and throat (ENT) outpatient department (OPD) with complaints of swelling in the left postaural region since 25 years gradually increasing in size. On examination, there was a single swelling in the left post aural region measuring about 4×5×3 (cms) hard in consistency and non-tender. Non contrast computerized tomography (CT) of temporal bone showed well defined extracranial dense sclerotic bony lesion arising from mastoid part of left temporal bone likely osteoma. Patient planned for excision and histopathological examination was consistent with osteoma. In conclusion, though osteoma in mastoid bone is a very rare possibility still it should be kept in consideration in the list of differential diagnoses of the tumors of temporal bone. We highlight the need for a careful clinical evaluation supported by radiologic and histopathological investigations which will help in the diagnosis, resulting in better prognosis.

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“…Mastoid osteomas are a rare entity with incidence of 0.1 -1% of all benign tumors of skull. 1 Its etiopathogenesis includes factors like trauma, hereditary, post radiation and chronic infection. 2 Computed tomography scan of the temporal bone is key investigation for its diagnosis.…”

Section: Introductionmentioning

confidence: 99%

Osteoma of mastoid part of right temporal bone with right nasochoanal polyposis: a rare case report

Lokanath

Basu

Kuthiala

2018

Int J Otorhinolaryngol Head Neck Surg

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Osteomas are benign mesenchymal osteoblastic tumors of lamellar bones. In our practice, they are usually seen in the paranasal sinuses, mainly involving the frontal and ethmoidal sinus. Osteoma of the temporal bone is uncommon and when they occur, they are most commonly seen in the external auditory canal. Mastoid osteomas are a rare entity with incidence of 0.1 - 1% of all benign tumors of skull. They are slowing growing and usually asymptomatic. We report a rare case in a 28 years female patient who presented to us with right postauricular bony swelling of size 2.5×3 cms along with bilateral nasal obstruction. Patient was analyzed for her clinical condition, imaging details, treatment and surgical plan. Diagnosis of right mastoid osteoma with right nasochoanal polyposis was made after non-contrast computed tomography of temporal bone and paranasal sinuses respectively. Complete surgical excision of the osteoma along with endoscopic removal of the polypoidal tissue was done with good cosmetic outcome without recurrence.

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Mastoid osteoma

Cited by 8 publications

References 8 publications

Mastoid Osteoma of the Temporal Bone

Mastoid Osteoma of the Temporal Bone

A rare presentation of left postaural mastoid osteoma

Osteoma of mastoid part of right temporal bone with right nasochoanal polyposis: a rare case report

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