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First case of bilateral coronoid hyperplasia in monozygotic twin sisters-a new aetiological perspective?

Sunil Dixit Khandavilli¹, Neeraj Pattni², Pradyumna Reddy Naredla³

¹Department of maxillofacial surgery, University Hospital Birmingham NHS Trust, Birmingham, UK. sunildixit30@yahoo.com.

Oral and Maxillofacial Surgery

|September 18, 2016

Abstract

Background:

Mandibular coronoid hyperplasia is a rare condition associated with gradual reduction in mouth opening. Its aetiology is unknown but increased temporalis activity, endocrine stimulus, trauma and familial causes have been proposed.

Case Report:

In this article, we present a case of bilateral coronoid hyperplasia presenting with limited mouth opening in 16-year-old Caucasian twin sisters.

Discussion:

This report gives a new perspective to the aetiology of coronoid hyperplasia since it describes its occurrence in monozygotic twins and hence provides a strong argument in support of a genetic aetiology.

Keywords:

Coronoid hyperplasia Coronoidectomy Coronoidotomy Monozygotic twins Trismus

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