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Pathology of Lipochoristoma

Dr Sampurna Roy MD 

 

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Syn: Lipomatous Choristoma.

Lipochoristomas (lipomatous choristomas) are rare tumors of the acoustic nerve (cranial nerve VIII/vestibulocochlear nerve).

They are slow-growing lesions with clinically indolent behavior and may be congenital malformations rather than neoplasms.

The tumours arise from cranial nerve VIII (cochlear or vestibular branch).

The tumour has a pink, ivory/pale gray to tan-maroon, and have a soft to rubbery postfixation consistency.

Histologically, the tumour includes the normal components of cranial nerve VIII, (myelinated nerve branches, glial cells, neurons, and small-caliber thin-walled vessels) together with varied amounts of mature adipocytes, mature fibrous tissue, tortuous thick walled vessels, smooth muscle bundles and skeletal muscle fibers.

 

Further reading

Lipochoristoma of the internal auditory canal.

Lipochoristomas of the cerebellopontine angle and internal acoustic meatus: a seven-case review.

Lipochoristomas (lipomatous tumors) of the acoustic nerve.

Pathology of the Ear. Cambridge, Mass: Harvard University Press; 1974.

Acoustic Nerve Tumors: Early Diagnosis and Treatment. 2nd ed. Springfield, Mass: Charles C Thomas; 1970.

Small tumors of the acoustic nerve. Their diagnosis and early treatment (apropos of 9 cases).

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Dr Sampurna Roy  MD

Consultant  Histopathologist (Kolkata - India)


 

 

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