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Ear Pathology Online

Pathology of Cylindroma of the External Ear  

Dr Sampurna Roy MD      

 

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A variety of tumors originating from the adnexal skin structures may appear in the external auditory meatus and canal.

The benign eccrine cylindroma is one of a number of histologically different tumors of the external auditory canal that have been grouped by some as "ceruminomas." 

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Histologically, they are characterized by cords of basophilic cells, hyaline material, and cystic duct-like structures.

Rarely, cases of malignant degeneration are reported.

However, for the most part, these lesions are benign and should be treated with complete local excision.

Radiotherapy may be useful in treating massive lesions not amenable to surgery.

In the past, authors have used the term cylindroma to refer to malignant lesions such as Adenoid Cystic Carcinoma.

The tumour differs from adenoid cystic carcinoma in the absence of a cribriform structure as well as in the presence of the large cells.

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Further reading

Cylindroma of the external auditory canal: histopathology diagnosti

Eccrine cylindroma of the ear canal--report of a case.

Benign dermal cylindroma of the external auditory canal: a clinicopathological report.

Benign eccrine cylindroma of the external auditory canal.

Malignant cylindroma of the external auditory canal.

 

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Dr Sampurna Roy  MD

Consultant  Histopathologist (Kolkata - India)


 

 

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